
Popular airlines from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT)
- JetBlue Airways
JetBlue Airways
- American Airlines
American Airlines
- Delta
Delta
- United
United
- Plan, book, fly with confidence
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Cheap Flights from Washington to St. Thomas (DCA-STT)
Prices were available within the past 7 days and start at $156 for one-way flights and $342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Washington (DCA) to St. Thomas (STT)
September is typically the cheapest month to fly
Graph displaying average flight prices per month
Alternative airports near St. Thomas
Prices were available within the past 7 days. Prices and availability are subject to change.
Origin airport | Ronald Reagan Washington National |
Destination airport | Cyril E. King |
Airlines serving | American Airlines, Delta, JetBlue Airways, United |
Roundtrip price | $342 |
Distance | 1591 mi |
Washington to St. Thomas Flights
The cheapest times to fly from Washington to St. Thomas
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to St. Thomas are during the month of September. You can find some of the cheapest flights from Washington to St. Thomas with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Washington to St. Thomas
Sunday is one of the best days to book for cheap flights from Washington to St. Thomas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Washington to St. Thomas
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $156 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to St. Thomas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to St. Thomas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
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Top Routes from Washington
- Washington to Chicago (DCA - ORD)
- Washington to Los Angeles (DCA - LAX)
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- Washington to Punta Cana (DCA - PUJ)
- Washington to Tampa (DCA - TPA)
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- Washington to Orlando (DCA - MCO)
Top Routes to St. Thomas
- Chicago to St. Thomas (ORD - STT)
- Newark Liberty Intl. Airport to St. Thomas (EWR - STT)
- Raleigh to St. Thomas (RDU - STT)
- Detroit to St. Thomas (DTW - STT)
- Boston to St. Thomas (BOS - STT)
- New York to St. Thomas (LGA - STT)
- Fort Lauderdale to St. Thomas (FLL - STT)
- Charlotte to St. Thomas (CLT - STT)
- New York to St. Thomas (JFK - STT)
- Dallas to St. Thomas (DAL - STT)
- Houston to St. Thomas (IAH - STT)
- New Orleans to St. Thomas (MSY - STT)
Top Routes from Washington
- American Airlines Washington to Chicago
- JetBlue Airways Washington to Los Angeles
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- JetBlue Airways Washington to Punta Cana
- JetBlue Airways Washington to Tampa
- JetBlue Airways Washington to Fort Lauderdale
- JetBlue Airways Washington to Boston
- Frontier Airlines Washington to Denver
- Alaska Airlines Washington to Seattle
- United Washington to Houston
Top Routes to St. Thomas
- Spirit Airlines Chicago to St. Thomas
- Spirit Airlines Newark Liberty Intl. Airport to St. Thomas
- JetBlue Airways Raleigh to St. Thomas
- JetBlue Airways Detroit to St. Thomas
- JetBlue Airways Boston to St. Thomas
- Spirit Airlines New York to St. Thomas
- JetBlue Airways Fort Lauderdale to St. Thomas
- Spirit Airlines Charlotte to St. Thomas
- JetBlue Airways New York to St. Thomas
- Delta Dallas to St. Thomas
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