--- title: "Ontario to St. Thomas (ONT-STT) flights from CA $430 - Compare Prices - Expedia.ca" description: "Search for flights from Ontario (ONT) to St. Thomas (STT) with one-way fares from CA $430 and roundtrip from CA $1,134—compare prices by dates today!" canonical: "https://www.expedia.ca/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas" language: en-CA market: CA currency: CAD prices_as_of: 2026-11-12T21:28:19Z --- # CA $430 Cheap Flights from Ontario Intl. Airport (ONT) to St. Thomas (STT) ![A coastal landscape with lush green hills, clear turquoise waters, and distant islands.](https://images.trvl-media.com/place/5526611/6604ab04-85b5-4b8e-8856-6e94bed4edd6.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View CA $430 flight on Sat, Mar 13, 2027](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:13/03/2027TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:429.90&airProductToken=AQqcAQozCMGCARIEMjIzNRiumwEg77kBKJnRpwMw89GnAzhCQABYAWoFQkFTSUNyCFFOTjJBSEJaCjEIwYIBEgM1OTIY77kBIK4cKIjUpwMw2NWnAzhCQAFYAWoFQkFTSUNyCFFOTjJBSEJaCjIIwYIBEgQxNzAxGK4cIPKcASiq16cDMMvZpwM4QkABWAFqBUJBU0lDcghRTk4yQUhCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ## Popular airlines from Ontario Intl. Airport (ONT) to Cyril E. King Airport (STT) [American Airlines](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:26/11/2026TANYT&leg2=from:STT,to:ONT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [United](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:26/11/2026TANYT&leg2=from:STT,to:ONT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) [Delta](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:26/11/2026TANYT&leg2=from:STT,to:ONT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [Southwest Airlines](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:26/11/2026TANYT&leg2=from:STT,to:ONT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) Find the cheapest flights on Expedia from Ontario Intl. Airport (ONT) to St. Thomas (STT). Flight ticket prices change frequently based on availability and demand. We send price‑drop alerts to make air travel simple and flexible. The lowest one-way fare found on Expedia for this route in the past 7 days starts at CA $430 for travel on March 13, 2027. ## Cheap Flights from Ontario to St. Thomas (ONT-STT) Prices were available within the past 7 days and start at CA $430 for one-way flights and CA $1,134 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select American Airlines flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,134 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1133.80&airProductToken=AQpqCjMIwYIBEgQxOTIwGK6bASDimgEoxqSdAzDWpp0DOEJAAFgBagVCQVNJQ3IITkxVME1CQloKMwjBggESBDI2ODQY4poBIPKcASjqp50DMMmpnQM4QkABWAFqBUJBU0lDcghOTFUwTUJCWgqfAQozCMGCARIEMzIwMBjynAEg4poBKM7unQMwzPCdAzhCQABYAWoFQkFTSUNyCE5MVjBNQkJaCjMIwYIBEgQyNTczGOKaASDvuQEo7vGdAzCN9J0DOEJAAVgBagVCQVNJQ3IITkxWME1CQloKMwjBggESBDE0MjMY77kBIK6bASiz950DMIP4nQM4QkABWAFqBUJBU0lDcghOTFYwTUJCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,199 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1198.80&airProductToken=AQqbAQoyCNWCARIENTU3NxiumwEgsnEo0aGdAzCuop0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMQjVggESBDE1MzEYsnEgiBgoiKSdAzC7pp0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMgjVggESBDE0NDMYiBgg8pwBKISonQMw9KmdAzhUQABYAWoFMl9lY29yCFROQTBIOUROCmgKMgjVggESBDIyMDgY8pwBIIg4KJfunQMw2fCdAzhUQABYAWoFMl9lY29yCFROQTBIOUROCjII1YIBEgQxNTYzGIg4IK6bASin8Z0DMP7ynQM4VEAAWAFqBTJfZWNvcghUTkEwSDlEThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,220 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1219.80&airProductToken=AQqdAQoyCNWCARIENTU3NxiumwEgsnEo0aGdAzCuop0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMgjVggESBDI0ODIYsnEgxI0BKIqknQMw0aadAzhUQABYAWoFMl9lY29yCFROQTBIOUROCjMI1YIBEgQxNTI5GMSNASDynAEokKedAzCFqZ0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KaAoyCNWCARIEMjIwOBjynAEgiDgol-6dAzDZ8J0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMgjVggESBDE1NjMYiDggrpsBKKfxnQMw%5FvKdAzhUQABYAWoFMl9lY29yCFROQTBIOUROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) Sun, Nov 15 - Sun, No · v 22 · ONT · STT · Roundtrip [Select American Airlines flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,230 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1229.80&airProductToken=AQpqCjMIwYIBEgQxOTIwGK6bASDimgEoxqSdAzDWpp0DOEJAAFgBagVCQVNJQ3IITkxVMEFCQloKMwjBggESBDI2ODQY4poBIPKcASjqp50DMMmpnQM4QkABWAFqBUJBU0lDcghOTFUwQUJCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select American Airlines flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,231 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1230.80&airProductToken=AQpqCjMIwYIBEgQxOTIwGK6bASDimgEoxqSdAzDWpp0DOEJAAFgBagVCQVNJQ3IITkxVME1CQloKMwjBggESBDMyMDAY4poBIPKcASj7qJ0DMNqqnQM4QkABWAFqBUJBU0lDcghOTFUwTUJCWgpqCjMIwYIBEgQyNjg0GPKcASDimgEoze2dAzDX750DOEJAAFgBagVCQVNJQ3IIR0xWME1CQloKMwjBggESBDI1NTIY4poBIK6bASiT8Z0DMNjznQM4QkABWAFqBUJBU0lDcghHTFYwTUJCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,264 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1263.80&airProductToken=AQqbAQoyCNWCARIENDY5ORiumwEgsnEo3aKdAzC6o50DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMQjVggESBDIxMTEYsnEgiBgo36SdAzCTp50DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMgjVggESBDE0NDMYiBgg8pwBKISonQMw9KmdAzhUQABYAWoFMl9lY29yCFROQTBIOUROCmgKMgjVggESBDIyMDgY8pwBIIg4KJfunQMw2fCdAzhUQABYAWoFMl9lY29yCFROQTBIOUROCjII1YIBEgQxNTYzGIg4IK6bASin8Z0DMP7ynQM4VEAAWAFqBTJfZWNvcghUTkEwSDlEThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,291 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1290.80&airProductToken=AQqnAQo2CNWCARIENTU3NxiumwEgsnEo0aGdAzCuop0DOFRAAFgBagk3X2Vjb3VucnNyCFROQTBBOURNCjUI1YIBEgQxNTMxGLJxIIgYKIiknQMwu6adAzhUQABYAWoJN19lY291bnJzcghUTkEwQTlETQo2CNWCARIEMTQ0MxiIGCDynAEohKidAzD0qZ0DOFRAAFgBagk3X2Vjb3VucnNyCFROQTBBOURNEgoIAhABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,294 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1293.80&airProductToken=AQqdAQoyCNWCARIENDY5ORiumwEgsnEo3aKdAzC6o50DOFNAAFgBagUyX2Vjb3IIU05BMEE5RE4KMgjVggESBDI0ODIYsnEgxI0BKIqknQMw0aadAzhTQABYAWoFMl9lY29yCFNOQTBBOUROCjMI1YIBEgQxNTI5GMSNASDynAEokKedAzCFqZ0DOFNAAFgBagUyX2Vjb3IIU05BMEE5RE4KaAoyCNWCARIEMjIwOBjynAEgiDgol-6dAzDZ8J0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMgjVggESBDE1NjMYiDggrpsBKKfxnQMw%5FvKdAzhUQABYAWoFMl9lY29yCFROQTBIOUROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,304 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1303.80&airProductToken=AQrQAQoyCNWCARIENTU3NxiumwEgsnEo0aGdAzCuop0DOFdAAFgBagUyX2Vjb3IIV05BMEE5RU4KMQjVggESBDI0MzYYsnEgg2ko26KdAzD2o50DOFdAAFgBagUyX2Vjb3IIV05BMEE5RU4KMgjVggESBDE3NDUYg2kgxI0BKOOknQMwwKadAzhXQABYAWoFMl9lY29yCFdOQTBBOUVOCjMI1YIBEgQxNTI5GMSNASDynAEokKedAzCFqZ0DOFdAAFgBagUyX2Vjb3IIV05BMEE5RU4KaAoyCNWCARIEMjIwOBjynAEgiDgol-6dAzDZ8J0DOFRAAFgBagUyX2Vjb3IIVE5BMEg5RE4KMgjVggESBDE1NjMYiDggrpsBKKfxnQMw%5FvKdAzhUQABYAWoFMl9lY29yCFROQTBIOUROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip [Select United flight, departing Sun, Nov 15 from Ontario to St. Thomas, returning Sun, Nov 22, priced at CA $1,311 Found 5 days ago](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:STT,departure:15/11/2026TANYT&leg2=from:STT,to:ONT,departure:22/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1310.80&airProductToken=AQqpAQo2CNWCARIENTU3NxiumwEgsnEo0aGdAzCuop0DOFRAAFgBagk3X2Vjb3VucnNyCFROQTBBOURNCjYI1YIBEgQyNDgyGLJxIMSNASiKpJ0DMNGmnQM4VEAAWAFqCTdfZWNvdW5yc3IIVE5BMEE5RE0KNwjVggESBDE1MjkYxI0BIPKcASiQp50DMIWpnQM4VEAAWAFqCTdfZWNvdW5yc3IIVE5BMEE5RE0SCggCEAEYASoCVUEYASIECAEQASgCKAMoBDAL) Sun, Nov 15 - Sun, Nov 22 · ONT · STT · Roundtrip ## Find the cheapest month to fly from Ontario (ONT) to St. Thomas (STT) ### April is typically the cheapest month to fly From CA $766 - CA $1,168 per traveller. View flights in April Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ. ## Book with confidence ### Ontario to St. Thomas Flights #### The easy way to book your flights from Ontario Intl. Airport to St. Thomas With Expedia, it’s simple to find and book flights to St. Thomas from Ontario Intl. Airport whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 4 airlines that cover this route. There are nonstop flights to Cyril E. King, too. Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario Intl. Airport to St. Thomas today, tomorrow, or this week. #### Save dollars with cheap flights from Ontario Intl. Airport, ONT to Cyril E. King, STT Sort your search results by price to find great deals on your flight from Ontario Intl. Airport to St. Thomas—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Thomas from Ontario Intl. Airport currently is just CA $1,134 rising to CA $1,914\. Here are more money-saving tips: - Fly in November when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to St. Thomas - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! #### Reasons to choose Expedia for your flight to St. Thomas from Ontario Intl. Airport Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Thomas with Expedia today. ## Frequently Asked Questions ### How much does a flight from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) cost? You can find one-way and return flights from ONT to STT with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to STT ticket fares go up or down. ### What is the cheapest month to fly from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? The cheapest months to fly from ONT to STT are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route. ### Which airlines fly direct from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? Enter ONT to STT and your travel dates, then apply the 'Nonstop' filter to see only direct flights. ### What is the cheapest airline that flies from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? JetBlue Airways is one of the cheapest airlines offering connecting return flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King), with tickets starting from around CA$940 for flights that can be booked for departure within the next year. These prices are per adult, for economy/coach class, and typically include a layover in John F. Kennedy Intl. (JFK). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget. ### How do I find cheap flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? To find a cheap flight from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up [Price Tracking](https://www.expedia.ca/why/price-tracking) and receive alerts when fares go up or down. ### What is the best time to fly from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience. ### How many flights per day from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? There are approximately 19 connecting flights per day from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King). Some common connection points include San Francisco Intl. (SFO), Sky Harbor Intl. (PHX), and John F. Kennedy Intl. (JFK). ### What is the earliest flight from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? The earliest flight from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) typically departs around 12:55 AM local time. This flight is operated by American Airlines. This is a seasonal service, active only in March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search. ### What day of the week has the most flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? You'll generally find the most flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) on a Sunday, with around 13 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Southwest Airlines, United, and American Airlines. Flight schedules are quite consistent throughout the week, so you'll have several flight options no matter which day you choose to fly. ### What are the most popular departure times for flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? The most popular departure times for flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) are in the late evening, from 9pm to midnight. Many major carriers, including American Airlines, Delta and Southwest Airlines, offer flights during this window. Many travellers prefer this because it allows you to maximize your day before flying and arrive at your destination refreshed. ### How long does it take to fly from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? There are no nonstop flights from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King). For flights with one stop, you can expect the journey to take around 12 hours 48 minutes. If your flight has two or more stops, the travel time will be longer, typically around 17 hours 48 minutes. The distance covered on this route is approximately 5470 kilometres. Keep in mind that these are average travel times, and your actual flight duration can vary due to factors like layover length, routing, and weather conditions. ### Can you fly business or first class from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? You can fly first class from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King). First class cabins are available on Delta and United. ### How do I earn miles on a Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) flight with Expedia? It's easy to earn miles on a Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of [One Key™](https://www.expedia.ca/welcome-one-key), you can also earn OneKeyCash™\* on top of your airline miles when you book with Expedia. \*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands. ### What airports do you fly into for St. Thomas (STT) from Ontario Intl. Airport (ONT)? If you're planning to travel to St. Thomas from Los Angeles - Ontario Intl. (ONT), you can fly directly into Cyril E. King (STT) which offers international flights and connections. Some flights may connect through major hubs like San Francisco Intl. (SFO), Denver Intl. (DEN), or Sky Harbor Intl. (PHX) before reaching St. Thomas. Compare routes and airports on Expedia to find the best flight options for your travel plans. ### Is it cheaper to buy a plane ticket from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) at the last minute? Typically, booking a last minute flight from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare. ### Is it cheaper to book a Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) flight and hotel package? Securing a Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) [flight and hotel package](https://www.expedia.ca/st-thomas.d6140138.destination-travel-guides) is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars. ### Can I cancel or change the date of my flight from Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King)? If you booked your Ontario Intl. Airport (ONT) to St. Thomas (STT-Cyril E. King) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in [your itinerary](https://www.expedia.ca/trips) or confirmation email. Or, head to our [Customer Service portal](https://www.expedia.ca/helpcenter/) if you'd like more information. ## Travel information | Origin airport | Ontario Intl. Airport | | ------------------- | ---------------------------------------------------- | | Destination airport | Cyril E. King Airport | | Distance | 5,468 km away | | Airlines serving | American Airlines, United, Delta, Southwest Airlines | | Popular airline | American Airlines | | Roundtrip price | CA $1,134 | ## Explore a world of travel with Expedia - [Flights](?equalTargetTab=tab-0) - [Flights from San Francisco (SFO) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sfo/stt/san-francisco-to-st-thomas) - [Flights from Montreal (YUL) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yul/stt/montreal-to-st-thomas) - [Flights from Ogdensburg (OGS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ogs/stt/ogdensburg-to-st-thomas) - [Flights from London (LHR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/lhr/stt/london-to-st-thomas) - [Flights from San José del Cabo (SJD) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sjd/stt/san-jose-del-cabo-to-st-thomas) - [Flights from London (YXU) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yxu/stt/london-to-st-thomas) - [Flights from George Town (GCM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/gcm/stt/george-town-to-st-thomas) - [Flights from Bridgetown (BGI) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/bgi/stt/bridgetown-to-st-thomas) - [Flights from Providenciales (PLS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/pls/stt/providenciales-to-st-thomas) - [Flights from Winnipeg (YWG) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ywg/stt/winnipeg-to-st-thomas) - [Flights from Hamilton (YHM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yhm/stt/hamilton-to-st-thomas) - [Flights from Roanoke (ROA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/roa/stt/roanoke-to-st-thomas) - [Flights from Washington (IAD) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/iad/stt/washington-to-st-thomas) - [Flights from Miami (MIA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/mia/stt/miami-to-st-thomas) - [Flights from Moncton (YQM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yqm/stt/moncton-to-st-thomas) - [Flights from Tortola (EIS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/eis/stt/tortola-to-st-thomas) - [Flights from Williston (XWA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/xwa/stt/williston-to-st-thomas) - [Flights from Regina (YQR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yqr/stt/regina-to-st-thomas) - [Flights from Minneapolis (MSP) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/msp/stt/minneapolis-to-st-thomas) - [Flights from Vancouver (YVR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yvr/stt/vancouver-to-st-thomas) - [Flights from Fort Myers (RSW) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/rsw/stt/fort-myers-to-st-thomas) - [Flights from San Juan (SJU) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sju/stt/san-juan-to-st-thomas) - [Flights from New Orleans (MSY) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/msy/stt/new-orleans-to-st-thomas) - [Flights from Seattle (SEA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sea/stt/seattle-to-st-thomas) - [Flights from Boston (BOS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/bos/stt/boston-to-st-thomas) - [Flights from Charlotte (CLT) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/clt/stt/charlotte-to-st-thomas) - [Flights from Nashville (BNA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/bna/stt/nashville-to-st-thomas) - [Flights from Punta Cana (PUJ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/puj/stt/punta-cana-to-st-thomas) - [Flights from Bangor (BGR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/bgr/stt/bangor-to-st-thomas) - [Flights from Port of Spain (POS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/pos/stt/port-of-spain-to-st-thomas) - [Flights from Calgary (YYC) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yyc/stt/calgary-to-st-thomas) - [Flights from Plattsburgh (PBG) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/pbg/stt/plattsburgh-to-st-thomas) - [Flights from Denver (DEN) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/den/stt/denver-to-st-thomas) - [Flights from Guangzhou (CAN) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/can/stt/guangzhou-to-st-thomas) - [Flights from Sault Ste. Marie (YAM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yam/stt/sault-ste-marie-to-st-thomas) - [Flights from Saint John (YSJ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ysj/stt/saint-john-to-st-thomas) - [Flights from Guatemala City (GUA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/gua/stt/guatemala-city-to-st-thomas) - [Flights from Kelowna (YLW) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ylw/stt/kelowna-to-st-thomas) - [Flights from Santo Domingo (SDQ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sdq/stt/santo-domingo-to-st-thomas) - [Flights from Buffalo (BUF) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/buf/stt/buffalo-to-st-thomas) - [Flights from Cleveland (CLE) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/cle/stt/cleveland-to-st-thomas) - [Flights from Myrtle Beach (MYR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/myr/stt/myrtle-beach-to-st-thomas) - [Flights from Orlando (MCO) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/mco/stt/orlando-to-st-thomas) - [Flights from Jacksonville (JAX) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/jax/stt/jacksonville-to-st-thomas) - [Flights from Phoenix (PHX) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/phx/stt/phoenix-to-st-thomas) - [Flights from Cancun (CUN) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/cun/stt/cancun-to-st-thomas) - [Flights from Windsor (YQG) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yqg/stt/windsor-to-st-thomas) - [Flights from Puerto Plata (POP) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/pop/stt/puerto-plata-to-st-thomas) - [Flights from Roatan (RTB) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/rtb/stt/roatan-to-st-thomas) - [Flights from Parry Sound (YPD) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ypd/stt/parry-sound-to-st-thomas) - [Flights from West Palm Beach (PBI) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/pbi/stt/west-palm-beach-to-st-thomas) - [Flights from St. John's (YYT) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yyt/stt/st-johns-to-st-thomas) - [Flights from Cambridge (CBG) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/cbg/stt/cambridge-to-st-thomas) - [Flights from Washington (DCA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/dca/stt/washington-to-st-thomas) - [Flights from Idaho Falls (IDA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ida/stt/idaho-falls-to-st-thomas) - [Flights from Halifax (YHZ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yhz/stt/halifax-to-st-thomas) - [Flights from Houston (HOU) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/hou/stt/houston-to-st-thomas) - [Flights from Austin (AUS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/aus/stt/austin-to-st-thomas) - [Flights from New York (LGA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/lga/stt/new-york-to-st-thomas) - [Flights from New York (JFK) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/jfk/stt/new-york-to-st-thomas) - [Flights from Los Angeles (LAX) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/lax/stt/los-angeles-to-st-thomas) - [Flights from Montreal (YMQ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ymq/stt/montreal-to-st-thomas) - [Flights from Dallas (DFW) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/dfw/stt/dallas-to-st-thomas) - [Flights from Toronto (YTO) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yto/stt/toronto-to-st-thomas) - [Flights from Spokane (GEG) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/geg/stt/spokane-to-st-thomas) - [Flights from Orange County (SNA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sna/stt/orange-county-to-st-thomas) - [Flights from Thunder Bay (YQT) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yqt/stt/thunder-bay-to-st-thomas) - [Flights from Montego Bay (MBJ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/mbj/stt/montego-bay-to-st-thomas) - [Flights from Nassau (NAS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/nas/stt/nassau-to-st-thomas) - [Flights from Toronto (YYZ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yyz/stt/toronto-to-st-thomas) - [Flights from Sarnia (YZR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yzr/stt/sarnia-to-st-thomas) - [Flights from Edmonton (YEG) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yeg/stt/edmonton-to-st-thomas) - [Flights from Philadelphia (PHL) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/phl/stt/philadelphia-to-st-thomas) - [Flights from Tampa (TPA) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/tpa/stt/tampa-to-st-thomas) - [Flights from Toronto (YTZ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ytz/stt/toronto-to-st-thomas) - [Flights from Wichita (ICT) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ict/stt/wichita-to-st-thomas) - [Flights from Portland (PWM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/pwm/stt/portland-to-st-thomas) - [Flights from Mexico City (MEX) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/mex/stt/mexico-city-to-st-thomas) - [Flights from Chicago (ORD) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ord/stt/chicago-to-st-thomas) - [Flights from Kingston (KIN) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/kin/stt/kingston-to-st-thomas) - [Flights from Memphis (MEM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/mem/stt/memphis-to-st-thomas) - [Flights from Ottawa (YOW) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yow/stt/ottawa-to-st-thomas) - [Flights from Fort Lauderdale (FLL) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/fll/stt/fort-lauderdale-to-st-thomas) - [Flights from Newark Liberty Intl. Airport (EWR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ewr/stt/newark-liberty-intl-airport-to-st-thomas) - [Flights from Burlington (BTV) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/btv/stt/burlington-to-st-thomas) - [Flights from Philipsburg (SXM) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/sxm/stt/philipsburg-to-st-thomas) - [Flights from Detroit (DET) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/det/stt/detroit-to-st-thomas) - [Flights from Detroit (DTW) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/dtw/stt/detroit-to-st-thomas) - [Flights from Baltimore (BWI) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/bwi/stt/baltimore-to-st-thomas) - [Flights from Atlanta (ATL) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/atl/stt/atlanta-to-st-thomas) - [Flights from Fargo (FAR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/far/stt/fargo-to-st-thomas) - [Flights from Columbus (CMH) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/cmh/stt/columbus-to-st-thomas) - [Flights from Saskatoon (YXE) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yxe/stt/saskatoon-to-st-thomas) - [Flights from Victoria (YYJ) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yyj/stt/victoria-to-st-thomas) - [Flights from Sudbury (YSB) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ysb/stt/sudbury-to-st-thomas) - [Flights from Houston (IAH) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/iah/stt/houston-to-st-thomas) - [Flights from Kitchener (YKF) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/ykf/stt/kitchener-to-st-thomas) - [Flights from Québec (YQB) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/yqb/stt/quebec-to-st-thomas) - [Flights from Las Vegas (LAS) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/las/stt/las-vegas-to-st-thomas) - [Flights from Syracuse (SYR) to St. Thomas (STT)](https://www.expedia.ca/lp/flights/syr/stt/syracuse-to-st-thomas) \*Available to Expedia members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas fr-CA: https://www.expedia.ca/fr/lp/vols/ont/stt/ontario-a-saint-thomas en-CA: https://www.expedia.ca/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas ar: https://www.expedia.sa/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas en-IE: https://www.expedia.ie/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas ko-KR: https://www.expedia.co.kr/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas nb-NO: https://www.expedia.no/lp/fly/ont/stt/ontario-int-lufthavn-til-st-thomas de-AT: https://www.expedia.at/lp/fluge/ont/stt/intl-flughafen-ontario-nach-st-thomas es-ES: https://www.expedia.es/lp/vuelos/ont/stt/aeropuerto-internacional-de-ontario-a-saint-thomas en-GB: https://www.expedia.co.uk/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas en-US: https://www.expedia.com/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas it-IT: https://www.expedia.it/lp/voli/ont/stt/aeroporto-internazionale-di-ontario-a-st-thomas es-MX: https://www.expedia.mx/lp/vuelos/ont/stt/aeropuerto-internacional-laontario-a-saint-thomas nl-NL: https://www.expedia.nl/lp/vluchten/ont/stt/internationale-luchthaven-ontario-naar-st-thomas en-AU: https://www.expedia.com.au/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas en-SG: https://www.expedia.com.sg/lp/flights/ont/stt/ontario-intl-airport-to-st-thomas de-DE: https://www.expedia.de/lp/fluge/ont/stt/intl-flughafen-ontario-nach-st-thomas ```