--- title: "CA $244 Cheap Flights from Boston (BOS) to St. Louis (STL)" description: "Cheap Flights from Boston (BOS) to St. Louis (STL) start at CA $244 for one-way and CA $522 for round trip. Earn your airline miles on top of our rewards!" canonical: "https://www.expedia.ca/lp/flights/bos/stl/boston-to-st-louis" language: en-CA market: CA currency: CAD prices_as_of: 2026-11-14T08:42:53Z --- # CA $244 Cheap Flights from Boston (BOS) to St. Louis (STL) ![A city skyline with a prominent arch bridge at sunset.](https://images.trvl-media.com/place/5002323/199e2ff7-9ba1-40d2-987c-00d8170be611.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View CA $244 flight on Mon, Nov 30, 2026](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:30/11/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:243.34&airProductToken=AQphCi8IxnISBDE5NzcYwZMBIMxwKMbGngMwl8ieAzhFQABYAWoEUENfMXIHUTE0UFhQNAouCMZyEgQxNjMxGMxwIPJcKOXLngMwh82eAzhFQAFYAWoEUENfMXIHUTE0UFhQNBIKCAEQARgBKgJGORgBIgQIARABKAIoAygEMA0) ## Popular airlines from Logan International Airport (BOS) to Lambert-St. Louis International Airport (STL) [American Airlines](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:28/11/2026TANYT&leg2=from:STL,to:BOS,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [Southwest Airlines](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:28/11/2026TANYT&leg2=from:STL,to:BOS,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) [United](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:28/11/2026TANYT&leg2=from:STL,to:BOS,departure:05/12/2026TANYT&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:BOS,to:STL,departure:28/11/2026TANYT&leg2=from:STL,to:BOS,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [Alaska Airlines](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:28/11/2026TANYT&leg2=from:STL,to:BOS,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) [Frontier Airlines](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:28/11/2026TANYT&leg2=from:STL,to:BOS,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) ### 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) ## Cheap Flights from Boston to St. Louis (BOS-STL) Prices were available within the past 7 days and start at CA $244 for one-way flights and CA $522 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select American Airlines flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $522 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:522.00&airProductToken=AQo0CjIIwYIBEgQ0Njc4GMGTASDyXCirzKUDMPfNpQM4QkAAWAFqBUJBU0lDcghRVkFJWFNCWgo0CjIIwYIBEgQzNTIwGPJcIMGTASi54qUDMNfjpQM4QkAAWAFqBUJBU0lDcghPVkFJVVNCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select Southwest Airlines flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $535 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:534.90&airProductToken=AQowCi4I15wBEgM3MDAYwZMBIPJcKPHHpQMwr8mlAzhEQABYAWoDV0dBcgdEWk5WUzJHEgoIAhABGAIqAkhSGAEiBAgBEAEoAigDKAQwAQ) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select American Airlines flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $536 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:535.90&airProductToken=AQpnCjIIwYIBEgQyMDk2GMGTASDvWSiMyaUDMO%5FJpQM4QkAAWAFqBUJBU0lDcghRVkFJWFNCWgoxCMGCARIENTYyMxjvWSDyXCinyqUDMM%5FLpQM4QkABWAFqBUJBU0lDcghRVkFJWFNCWgo0CjIIwYIBEgQzNTIwGPJcIMGTASi54qUDMNfjpQM4QkAAWAFqBUJBU0lDcghPVkFJVVNCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select Delta flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $543 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:542.40&airProductToken=AQpvCjYIxJgBEgQ1NjA5GMGTASDLASj0y6UDMM7MpQM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0E1QkMKNQjEmAESBDU3MzAYywEg8lwotM6lAzDpz6UDOEVAAVgBaglNQUlOQkFTSUNyCFZBVlNBNUJDEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select American Airlines flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $544 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:543.40&airProductToken=AQo0CjIIwYIBEgQzNTIwGMGTASDyXCjuyKUDMLrKpQM4QkAAWAFqBUJBU0lDcghRVkFJWFNCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select American Airlines flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $558 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:557.30&airProductToken=AQpnCjIIwYIBEgQ0NDk0GMGTASDLASjTyqUDMK3LpQM4QkAAWAFqBUJBU0lDcghRVkFJWFNCWgoxCMGCARIENDQ2MRjLASDyXCjVy6UDMIrNpQM4QkABWAFqBUJBU0lDcghRVkFJWFNCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select Southwest Airlines flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $563 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:562.80&airProductToken=AQpgCi8I15wBEgQ0ODAzGMGTASChAyi5yaUDMOjKpQM4REAAWAFqA1dHQXIHRFpBVlMyRwotCNecARIDNjc0GKEDIPJcKP7LpQMwycylAzhEQAFYAWoDV0dBcgdEWkFWUzJHEgoIAhABGAIqAkhSGAEiBAgBEAEoAigDKAQwAQ) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select Delta flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $564 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:563.80&airProductToken=AQpvCjYIxJgBEgQ1NzcxGMGTASDLASjQyKUDMK7JpQM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0E1QkMKNQjEmAESBDU3ODEYywEg8lwoncqlAzDYy6UDOEVAAVgBaglNQUlOQkFTSUNyCFZBVlNBNUJDCm8KNQjEmAESBDU3NjYY8lwgywEo5d-lAzD24KUDOEVAAFgBaglNQUlOQkFTSUNyCFZBVlNIM0JDCjYIxJgBEgQ1NjI0GMsBIMGTASi04qUDMP%5FipQM4RUABWAFqCU1BSU5CQVNJQ3IIVkFWU0gzQkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip [Select Frontier Airlines flight, departing Wed, Nov 25 from Boston to St. Louis, returning Tue, Dec 8, priced at CA $570 Found 16 hours ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:25/11/2026TANYT&leg2=from:STL,to:BOS,departure:08/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:569.49&airProductToken=AQphCi8IxnISBDE5NzcYwZMBIMxwKKaOngMw94-eAzhFQABYAWoEUENfMXIHRTAwUFhQNAouCMZyEgQxNjMxGMxwIPJcKMWTngMw55SeAzhFQAFYAWoEUENfMXIHRTAwUFhQNBIKCAEQARgBKgJGORgBIgQIARABKAIoAygEMA0) Wed, Nov 25 - Tue, Dec 8 · BOS · STL · Roundtrip [Select United flight, departing Thu, Feb 18 from Boston to St. Louis, returning Sat, Feb 20, priced at CA $614 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:STL,departure:18/02/2027TANYT&leg2=from:STL,to:BOS,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:613.30&airProductToken=AQpnCjII1YIBEgQxNzM0GMGTASCIGCiFyKUDMPLIpQM4VEAAWAFqBTJfZWNvcghUQUcyQUtEUwoxCNWCARIENDQyNxiIGCDyXCivyaUDMMjKpQM4VEAAWAFqBTJfZWNvcghUQUcyQUtEUxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) Thu, Feb 18 - Sat, Feb 20 · BOS · STL · Roundtrip ## Find the cheapest month to fly from Boston (BOS) to St. Louis (STL) ### December is typically the cheapest month to fly From CA $375 - CA $602 per traveller. View flights in December 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 ### Boston to St. Louis Flights #### The easy way to book your flights from Boston to St. Louis With Expedia, it’s simple to find and book flights to St. Louis from Boston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 5 airlines that cover this route. There are American Airlines nonstop flights to Lambert-St. Louis Intl., 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 Boston to St. Louis today, tomorrow, or this week. #### Save dollars with cheap flights from Logan Intl., BOS to Lambert-St. Louis Intl., STL Sort your search results by price to find great deals on your flight from Boston to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Boston currently is just CA $522 rising to CA $614\. Here are more money-saving tips: - Fly in February when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to St. Louis - 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. Louis from Boston 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. Louis with Expedia today. ## Frequently Asked Questions ### How much does a flight from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost? You can find cheap one-way flights from CA $244 and cheap return flights CA $522 BOS to STL with Expedia. One-way flights typically cost between CA$348 and CA$889\. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when BOS to STL ticket fares go up or down. ### What is the cheapest month to fly from Boston, MA (BOS) to St. Louis, MO (STL)? The cheapest months to fly from Boston, MA (BOS) to St. Louis, MO (STL) 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 Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? There are 2 airlines offering direct flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). Here are the carriers: \* Southwest Airlines operates 21 direct flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) every week. \* American Airlines operates 17 direct flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) every week. ### What is the cheapest airline that flies from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? Frontier Airlines offers one of the cheapest connecting return flights on this route, with prices starting from around CA$221\. Louis Intl.), with prices starting from around CA$337 for flights that can be booked for departure within the next year. Southwest Airlines is one of the cheapest airlines offering nonstop return flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. These prices are per adult, for economy/coach class. 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 Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? To find a cheap flight from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), 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 airline to fly with from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? The best airline to fly with from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. American Airlines offers the most daily flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access. ### What is the best time to fly from Boston, MA (BOS) to St. Louis, MO (STL)? 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 Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? You'll find approximately 5 nonstop flights per day from Boston Logan International (BOS) to St. Louis Lambert International (STL). For even more choices, look at flights that include layovers, as there are around 140 connecting flights per day. Some common connection points include O'Hare International (ORD), Seattle - Tacoma International (SEA), and Portland International (PDX). ### What is the earliest flight from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? The earliest flight from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) typically departs around 5:00 AM. This service is offered by American Airlines and Southern Airways. This is a seasonal service, active in June, July, August, and September. 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 Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? You'll typically find the most flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) on a Thursday, with around 89 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Delta, and United. Flight schedules are quite consistent throughout the week, with only a slight variation in the number of flights on other days. ### What are the most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? The most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) are in the afternoon, from 3pm to 6pm. Many major carriers, including American Airlines, Delta and Southwest Airlines, offer flights during this window. Many travelers prefer this because it allows for a productive morning before heading to the airport and an evening arrival in St. Louis. ### How long does it take to fly from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? A direct flight from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) typically takes around 3 hours 18 minutes, covering a distance of approximately 1,680 kilometers. If you opt for a flight with one stop, your journey will usually be longer, taking about 5 hours 48 minutes. Flights with two or more stops will extend your travel time further, to around 8 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic. ### Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? Yes, you can fly business class or first class between BOS and STL. You can fly business class with Frontier Airlines and Delta. First class cabins are available on Alaska Airlines, Spirit Airlines, Delta, United, and American Airlines. ### How do I earn miles on a Boston, MA (BOS) to St. Louis, MO (STL) flight with Expedia? It's easy to earn miles on a Boston, MA (BOS) to St. Louis, MO (STL) 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. Louis, MO (STL) from Boston, MA (BOS)? If you're planning to travel to St. Louis from Logan International Airport (BOS), you can fly directly into Lambert-St. Louis International Airport (STL). Some flights may connect through major hubs like Portland International Airport (PDX), Baltimore Washington International Thurgood Marshall Airport (BWI), or Seattle - Tacoma International Airport (SEA) before reaching St. Louis. 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 Boston, MA (BOS) to St. Louis, MO (STL) at the last minute? Typically, booking a last minute flight from Boston, MA (BOS) to St. Louis, MO (STL) 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 Boston, MA (BOS) to St. Louis, MO (STL) flight and hotel package? Securing a Boston, MA (BOS) to St. Louis, MO (STL) [flight and hotel package](https://www.expedia.ca/st-louis.d178309.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 Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)? If you booked your Boston, MA (BOS-Logan Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) 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 | Logan International Airport | | ------------------- | ---------------------------------------------------------------------------------------- | | Destination airport | Lambert-St. Louis International Airport | | Distance | 1,679 km away | | Airlines serving | American Airlines, Southwest Airlines, United, Delta, Alaska Airlines, Frontier Airlines | | Popular airline | American Airlines | | Roundtrip price | CA $522 | | Average flight time | 3 hours 13 mins | ## Explore a world of travel with Expedia - [Flights](?equalTargetTab=tab-0) - [Flights from Atlanta (ATL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/atl/stl/atlanta-to-st-louis) - [Flights from Dakar (DKR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/dkr/stl/dakar-to-st-louis) - [Flights from International Falls (INL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/inl/stl/international-falls-to-st-louis) - 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[Flights from Miami (MIA) to St. Louis (STL)](https://www.expedia.ca/lp/flights/mia/stl/miami-to-st-louis) - [Flights from Salt Lake City (SLC) to St. Louis (STL)](https://www.expedia.ca/lp/flights/slc/stl/salt-lake-city-to-st-louis) - [Flights from Toronto (YTZ) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ytz/stl/toronto-to-st-louis) - [Flights from San Francisco (SFO) to St. Louis (STL)](https://www.expedia.ca/lp/flights/sfo/stl/san-francisco-to-st-louis) - [Flights from San Antonio (SAT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/sat/stl/san-antonio-to-st-louis) - [Flights from San Diego (SAN) to St. Louis (STL)](https://www.expedia.ca/lp/flights/san/stl/san-diego-to-st-louis) - [Flights from Cincinnati (CVG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/cvg/stl/cincinnati-to-st-louis) - [Flights from Kingston (KIN) to St. Louis (STL)](https://www.expedia.ca/lp/flights/kin/stl/kingston-to-st-louis) - [Flights from Kansas City (MCI) to St. Louis (STL)](https://www.expedia.ca/lp/flights/mci/stl/kansas-city-to-st-louis) - [Flights from Bellingham (BLI) to St. Louis (STL)](https://www.expedia.ca/lp/flights/bli/stl/bellingham-to-st-louis) - [Flights from Rochester (ROC) to St. Louis (STL)](https://www.expedia.ca/lp/flights/roc/stl/rochester-to-st-louis) - [Flights from Sault Ste. Marie (SSM) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ssm/stl/sault-ste-marie-to-st-louis) - [Flights from Bangor (BGR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/bgr/stl/bangor-to-st-louis) - [Flights from Regina (YQR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqr/stl/regina-to-st-louis) - [Flights from Newark Liberty Intl. Airport (EWR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ewr/stl/newark-liberty-intl-airport-to-st-louis) - [Flights from Plattsburgh (PBG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/pbg/stl/plattsburgh-to-st-louis) - [Flights from Great Falls (GTF) to St. Louis (STL)](https://www.expedia.ca/lp/flights/gtf/stl/great-falls-to-st-louis) - [Flights from Charlottetown Alexander B. Campbell Airport (YYG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yyg/stl/charlottetown-to-st-louis) - [Flights from Spokane (GEG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/geg/stl/spokane-to-st-louis) - [Flights from Ogdensburg (OGS) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ogs/stl/ogdensburg-to-st-louis) - [Flights from Fort Saint John (YXJ) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yxj/stl/fort-saint-john-to-st-louis) - [Flights from New Orleans (MSY) to St. Louis (STL)](https://www.expedia.ca/lp/flights/msy/stl/new-orleans-to-st-louis) - [Flights from Orange County (SNA) to St. Louis (STL)](https://www.expedia.ca/lp/flights/sna/stl/orange-county-to-st-louis) - [Flights from Dallas (DFW) to St. Louis (STL)](https://www.expedia.ca/lp/flights/dfw/stl/dallas-to-st-louis) - [Flights from Toronto (YTO) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yto/stl/toronto-to-st-louis) - [Flights from Syracuse (SYR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/syr/stl/syracuse-to-st-louis) - [Flights from Ottawa (YOW) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yow/stl/ottawa-to-st-louis) - [Flights from London (YXU) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yxu/stl/london-to-st-louis) - [Flights from Minneapolis (MSP) to St. Louis (STL)](https://www.expedia.ca/lp/flights/msp/stl/minneapolis-to-st-louis) - [Flights from Houston (IAH) to St. Louis (STL)](https://www.expedia.ca/lp/flights/iah/stl/houston-to-st-louis) - [Flights from Sarasota (SRQ) to St. Louis (STL)](https://www.expedia.ca/lp/flights/srq/stl/sarasota-to-st-louis) - [Flights from Québec (YQB) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqb/stl/quebec-to-st-louis) - [Flights from Montreal (YUL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yul/stl/montreal-to-st-louis) - [Flights from Lagos (LOS) to St. Louis (STL)](https://www.expedia.ca/lp/flights/los/stl/lagos-to-st-louis) - [Flights from Sault Ste. Marie (CIU) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ciu/stl/sault-ste-marie-to-st-louis) - [Flights from Ontario Intl. Airport (ONT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ont/stl/ontario-to-st-louis) - [Flights from Vancouver (YVR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yvr/stl/vancouver-to-st-louis) - [Flights from Abbotsford (YXX) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yxx/stl/abbotsford-to-st-louis) - [Flights from Washington (DCA) to St. Louis (STL)](https://www.expedia.ca/lp/flights/dca/stl/washington-to-st-louis) - [Flights from Columbus (CMH) to St. Louis (STL)](https://www.expedia.ca/lp/flights/cmh/stl/columbus-to-st-louis) - [Flights from Halifax (YHZ) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yhz/stl/halifax-to-st-louis) - [Flights from Calgary (YYC) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yyc/stl/calgary-to-st-louis) - [Flights from Los Angeles (LAX) to St. Louis (STL)](https://www.expedia.ca/lp/flights/lax/stl/los-angeles-to-st-louis) - [Flights from Kitchener (YKF) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ykf/stl/kitchener-to-st-louis) - [Flights from Philadelphia (PHL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/phl/stl/philadelphia-to-st-louis) - [Flights from Sudbury (YSB) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ysb/stl/sudbury-to-st-louis) - [Flights from Detroit (DTW) to St. Louis (STL)](https://www.expedia.ca/lp/flights/dtw/stl/detroit-to-st-louis) - [Flights from Duluth (DLH) to St. Louis (STL)](https://www.expedia.ca/lp/flights/dlh/stl/duluth-to-st-louis) - [Flights from Pittsburgh (PIT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/pit/stl/pittsburgh-to-st-louis) - [Flights from Hamilton (YHM) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yhm/stl/hamilton-to-st-louis) - [Flights from Victoria (YYJ) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yyj/stl/victoria-to-st-louis) - [Flights from Fargo (FAR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/far/stl/fargo-to-st-louis) - [Flights from Kalispell (FCA) to St. Louis (STL)](https://www.expedia.ca/lp/flights/fca/stl/kalispell-to-st-louis) - [Flights from Thunder Bay (YQT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqt/stl/thunder-bay-to-st-louis) - [Flights from Kelowna (YLW) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ylw/stl/kelowna-to-st-louis) - [Flights from Las Vegas (LAS) to St. Louis (STL)](https://www.expedia.ca/lp/flights/las/stl/las-vegas-to-st-louis) - [Flights from Denver (DEN) to St. Louis (STL)](https://www.expedia.ca/lp/flights/den/stl/denver-to-st-louis) - [Flights from Austin (AUS) to St. Louis (STL)](https://www.expedia.ca/lp/flights/aus/stl/austin-to-st-louis) - [Flights from Minot (MOT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/mot/stl/minot-to-st-louis) - [Flights from Moncton (YQM) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqm/stl/moncton-to-st-louis) - [Flights from Cranbrook (YXC) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yxc/stl/cranbrook-to-st-louis) - [Flights from St. John's (YYT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yyt/stl/st-johns-to-st-louis) - [Flights from Buffalo (BUF) to St. Louis (STL)](https://www.expedia.ca/lp/flights/buf/stl/buffalo-to-st-louis) - [Flights from Saskatoon (YXE) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yxe/stl/saskatoon-to-st-louis) - [Flights from Lethbridge (YQL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yql/stl/lethbridge-to-st-louis) - [Flights from Hamilton (HLT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/hlt/stl/hamilton-to-st-louis) - [Flights from Delhi (DEL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/del/stl/delhi-to-st-louis) - [Flights from Toronto (YYZ) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yyz/stl/toronto-to-st-louis) - [Flights from Windsor (YQG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqg/stl/windsor-to-st-louis) - [Flights from Winnipeg (YWG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ywg/stl/winnipeg-to-st-louis) \*Available to Expedia members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/lp/flights/bos/stl/boston-to-st-louis zh-TW: https://www.expedia.com.tw/lp/flights/bos/stl/boston-to-st-louis es: https://www.expedia.com/es/lp/vuelos/bos/stl/boston-a-st-louis en-CA: https://www.expedia.ca/lp/flights/bos/stl/boston-to-st-louis es-ES: https://www.expedia.es/lp/vuelos/bos/stl/boston-a-st-louis ar: https://www.expedia.sa/lp/flights/bos/stl/boston-to-st-louis ja-JP: https://www.expedia.co.jp/lp/flights/bos/stl/boston-to-st-louis en-IE: https://www.expedia.ie/lp/flights/bos/stl/boston-to-st-louis sv-SE: https://www.expedia.se/lp/flyg/bos/stl/boston-till-st-louis de-AT: https://www.expedia.at/lp/fluge/bos/stl/boston-nach-st-louis id-ID: https://www.expedia.co.id/lp/flights/bos/stl/boston-to-st-louis ko-KR: https://www.expedia.co.kr/lp/flights/bos/stl/boston-to-st-louis en-NZ: https://www.expedia.co.nz/lp/flights/bos/stl/boston-to-st-louis en-JP: https://www.expedia.co.jp/en/lp/flights/bos/stl/boston-to-st-louis en-SG: https://www.expedia.com.sg/lp/flights/bos/stl/boston-to-st-louis en-KR: https://www.expedia.co.kr/en/lp/flights/bos/stl/boston-to-st-louis de-CH: https://www.expedia.ch/lp/fluege/bos/stl/boston-nach-st-louis de-DE: https://www.expedia.de/lp/fluge/bos/stl/boston-nach-st-louis es-MX: https://www.expedia.mx/lp/vuelos/bos/stl/boston-a-st-louis en-US: https://www.expedia.com/lp/flights/bos/stl/boston-to-st-louis pt-BR: https://www.expedia.com.br/lp/voos/bos/stl/boston-para-st-louis nl-NL: https://www.expedia.nl/lp/vluchten/bos/stl/boston-naar-st-louis en-TW: https://www.expedia.com.tw/en/lp/flights/bos/stl/boston-to-st-louis en-GB: https://www.expedia.co.uk/lp/flights/bos/stl/boston-to-st-louis fr-FR: https://www.expedia.fr/lp/vols/bos/stl/boston-a-st-louis fr-CA: https://www.expedia.ca/fr/lp/vols/bos/stl/boston-a-st-louis it-IT: https://www.expedia.it/lp/voli/bos/stl/boston-a-st-louis en-HK: https://www.expedia.com.hk/en/lp/flights/bos/stl/boston-to-st-louis zh-CN: https://www.expedia.com/cn/lp/flights/bos/stl/boston-to-st-louis en-IN: https://www.expedia.co.in/lp/flights/bos/stl/boston-to-st-louis ```