$137 Cheap Flights from Washington (DCA) to St. Thomas (STT)

View $137 flight on Sat, Aug 16, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT)

Cheap Flights from Washington to St. Thomas (DCA-STT)

Prices were available within the past 7 days and start at $137 for one-way flights and $272 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Fri, Aug 8 - Wed, Aug 13
DCA
Washington
STT
St. Thomas
$272 Roundtrip, found 5 days ago
$272
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Fri, Aug 8 from Washington to St. Thomas, returning Wed, Aug 13, priced at $272 found 5 days ago
JetBlue Airways
Mon, Aug 11 - Sat, Aug 16
DCA
Washington
STT
St. Thomas
$282 Roundtrip, found 2 days ago
$282
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Mon, Aug 11 from Washington to St. Thomas, returning Sat, Aug 16, priced at $282 found 2 days ago
JetBlue Airways
Tue, Aug 12 - Sat, Aug 16
DCA
Washington
STT
St. Thomas
$292 Roundtrip, found 1 day ago
$292
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Aug 12 from Washington to St. Thomas, returning Sat, Aug 16, priced at $292 found 1 day ago
JetBlue Airways
Tue, Jul 15 - Sat, Aug 16
DCA
Washington
STT
St. Thomas
$307 Roundtrip, found 1 day ago
$307
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Jul 15 from Washington to St. Thomas, returning Sat, Aug 16, priced at $307 found 1 day ago
JetBlue Airways
Mon, Aug 18 - Wed, Aug 27
DCA
Washington
STT
St. Thomas
$317 Roundtrip, found 4 hours ago
$317
Roundtrip
found 4 hours ago
Select JetBlue Airways flight, departing Mon, Aug 18 from Washington to St. Thomas, returning Wed, Aug 27, priced at $317 found 4 hours ago
JetBlue Airways
Mon, Aug 18 - Thu, Aug 21
DCA
Washington
STT
St. Thomas
$318 Roundtrip, found 11 hours ago
$318
Roundtrip
found 11 hours ago
Select JetBlue Airways flight, departing Mon, Aug 18 from Washington to St. Thomas, returning Thu, Aug 21, priced at $318 found 11 hours ago
JetBlue Airways
Mon, Jul 28 - Wed, Aug 6
DCA
Washington
STT
St. Thomas
$327 Roundtrip, found 22 hours ago
$327
Roundtrip
found 22 hours ago
Select JetBlue Airways flight, departing Mon, Jul 28 from Washington to St. Thomas, returning Wed, Aug 6, priced at $327 found 22 hours ago
American Airlines
Fri, Sep 19 - Mon, Sep 22
DCA
Washington
STT
St. Thomas
$469 Roundtrip, found 1 hour ago
$469
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Sep 19 from Washington to St. Thomas, returning Mon, Sep 22, priced at $469 found 1 hour ago
Delta
Tue, Mar 3 - Tue, Mar 10
DCA
Washington
STT
St. Thomas
$469 Roundtrip, found 1 hour ago
$469
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Mar 3 from Washington to St. Thomas, returning Tue, Mar 10, priced at $469 found 1 hour ago
United
Thu, Mar 5 - Mon, Mar 9
DCA
Washington
STT
St. Thomas
$469 Roundtrip, found 5 hours ago
$469
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Mar 5 from Washington to St. Thomas, returning Mon, Mar 9, priced at $469 found 5 hours ago

Find the cheapest month to fly from Washington (DCA) to St. Thomas (STT)

September is typically the cheapest month to fly

From $215 - $535 per traveler.

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.

Select flight to Terrance B. Lettsome Intl. EIS. Flights from $878
EIS
Terrance B. Lettsome Intl.
Flights from $878
Select flight to Benjamin Rivera Noriega CPX. Flights from $641
CPX
Benjamin Rivera Noriega
Flights from $641
Flights from Washington (DCA) to St. Thomas (STT)
Origin airport
Ronald Reagan Washington National
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$272
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 August. 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 $137 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.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT) cost?
Discover the latest flight deals from DCA to STT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DCA to STT?
The cheapest flights from DCA to STT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT)?
There are no direct routes from Washington, DC (DCA-Ronald Reagan Washington National) to Cyril E. King Airport (STT). However, you can find other airports that have nonstop flights. Board your plane at Washington Dulles Intl. Airport (IAD) and fly straight to St. Thomas without a layover.
What is the cheapest airline that flies from DCA to STT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from DCA to STT. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT)?
You'll have to hop on a flight with a layover if you're traveling from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from DCA to STT?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT)?
To avoid possible delays on the Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT) last-minute?
Waiting until just before your departure to book your flight from DCA to STT generally means paying more. While you may come across some last-minute discounts, they aren't always guaranteed. Be flexible with your travel plans to maximize your chances of getting a bargain.
Is it cheaper to book a DCA to STT flight and hotel package?
Compared with arranging flights and hotels separately, booking a DCA to STT flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of planning your trip. Simply pick your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Cyril E. King Airport (STT)?
In most instances, you can cancel or reschedule your DCA to STT flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you'd like more information, go to our Customer Service portal.

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*Available to One Key members.