Cheap Flights from Washington (DCA) to St. Thomas (SPB)

Popular airlines from Ronald Reagan Washington National Airport (DCA) to St. Thomas (SPB-St. Thomas Seaplane Base)

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Alternative airports near St. Thomas

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Cyril E. King STT. Cheapest option available. Flights from $211
STT
Cyril E. King
Cheapest
Flights from $211
Select flight to Terrance B. Lettsome Intl. EIS. Flights from $896
EIS
Terrance B. Lettsome Intl.
Flights from $896
Select flight to Benjamin Rivera Noriega CPX. Flights from $585
CPX
Benjamin Rivera Noriega
Flights from $585

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB) cost?
Snag a cheap one-way flight or cheap return flight from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB)?
Planning your trip for may help you find better deals, as it's the cheapest month for flights between DCA and SPB. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from DCA to SPB. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB)?
There are no daily nonstop flights departing from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from DCA to SPB?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on various factors, including the season and airline.*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 St. Thomas Seaplane Base Airport (SPB)?
Select a flight from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be 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 St. Thomas Seaplane Base Airport (SPB) last-minute?
Waiting until right before your break to book a ticket from DCA to SPB generally means paying more. While you may come across some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible for a better chance of getting a bargain.
Is it cheaper to book a DCA to SPB flight and hotel package?
You'll typically save money by booking a DCA to SPB flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After choosing your preferred flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to St. Thomas Seaplane Base Airport (SPB)?
Typically, it's possible to reschedule or cancel your DCA to SPB flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
St. Thomas Seaplane Base
Distance
1592 mi

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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 . 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 2026. You can also book with separate airlines for your outbound and return journeys, from 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.

 

Washington to St. Thomas Flights
*Available to One Key members.