Title: CA $334 Cheap Flights from St. Thomas (STT) to Washington (IAD) - Expedia.ca ![Washington DC in Spring](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $334 Cheap Flights from St. Thomas (STT) to Washington (IAD) [View CA $334 flight on Wed, Nov 12, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:STT,to:IAD,departure:12/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:334.00&airProductToken=AQppCjMI1YIBEgQxNTMwGPKcASDEjQEo5_L8AjD49PwCOExAAFgBagUyX2Vjb3IITE5BMkE5RE4KMgjVggESBDIyMTIYxI0BIIgYKNn1_AIwtfb8AjhMQABYAWoFMl9lY29yCExOQTJBOUROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Cyril E. King Airport (STT) to Washington Dulles International Airport (IAD) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:stt,to:iad,departure:07/11/2025TANYT&leg2=from:iad,to:stt,departure:14/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:stt,to:iad,departure:07/11/2025TANYT&leg2=from:iad,to:stt,departure:14/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:stt,to:iad,departure:07/11/2025TANYT&leg2=from:iad,to:stt,departure:14/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from St. Thomas (STT) to Washington (IAD) Prices were available within the past 7 days and start at CA $334 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ## Find the cheapest month to fly from St. Thomas (STT) to Washington (IAD) ### October is typically the cheapest month to fly From CA $556 - CA $1,242 per traveller. ## Frequently asked questions ### How much is a flight from Cyril E. King Airport (STT) to IAD? > Pack your bags, because round-trip journeys between Cyril E. King Airport (STT) and Dulles Intl. Airport start from . That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today to get the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from STT to Washington Dulles Intl. Airport (IAD)? > This differs from airline to airline, as each one has its own set of terms and conditions. Visit the [Customer Service Portal](https://www.expedia.ca/helpcenter), where there are easy instructions on how to cancel online. ### How do I find cheap flights from Cyril E. King Airport to Washington Dulles Intl. Airport (IAD) that have flexible change policies? > Flights from STT to IAD offering flexible change policies are available with many airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the fare difference, with no extra fees to worry about. ### How many hours is the flight from Cyril E. King Airport to Dulles Intl. Airport? > It takes about 6 hours and 54 minutes to fly from STT to IAD. But with a solid playlist and an interesting book, the time will pass by quicker. ### How far is the flight from Cyril E. King Airport to Dulles Intl. Airport? > You'll be cruising at altitude for a while, as the flight distance from STT to Washington Dulles Intl. Airport (IAD) is 2,600 kilometres. Put together a playlist of your favourite podcasts before leaving home to stay entertained during the trip. ### Which airlines fly direct from Cyril E. King Airport to IAD? > Operating 30 flights every month, United Airlines (UA) is a popular choice when flying straight from STT to IAD. ### Are STT to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute? > Flight prices fluctuate, so not always. While last-minute flight deals between Cyril E. King Airport (STT) and IAD are possible, it's also a good idea to keep track of prices well before you fly. In fact, some air carriers release their prices up to 12 months ahead of the departure date. Expedia is continuously updating the biggest airfare bargains around, so keep checking and be ready to pounce when the fares dip. ## Travel information | Origin airport | Cyril E. King | | --- | --- | | Destination airport | Washington Dulles Intl. | | Distance | 2574 km | | Average flight time | 5 hours 8 mins | ## Book with confidence ### St. Thomas to Chantilly Flights **The easy way to book your flights from St. Thomas to Washington**  With Expedia, it’s simple to find and book flights to Washington from St. Thomas whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Washington Dulles 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 St. Thomas to Washington today, tomorrow, or this week.   **Save dollars with cheap flights from Cyril E. King, STT to Washington Dulles Intl., IAD**  Sort your search results by price to find great deals on your flight from St. Thomas to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from St. Thomas currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Washington   - 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 Washington from St. Thomas**  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 Washington with Expedia today. \*Available to Expedia members.