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Cheap flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island from $143

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Saint Thomas Island departing on 5/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
1:22 pm - 11:58 pm
STT
-
DCA
10h 36m
1 stop
$290United Airlines
Sun, May 17 - Wed, May 20
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
1:22 pm - 11:58 pm
STT
-
DCA
10h 36m
1 stop
$311United Airlines
Thu, May 14 - Tue, May 19
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
2:10 pm - 10:54 pm
STT
-
DCA
8h 44m
1 stop
$322United Airlines
Sun, May 17 - Sat, May 23
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
2:10 pm - 9:31 pm
STT
-
DCA
7h 21m
1 stop
$332United Airlines
Tue, May 12 - Fri, May 15
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
2:10 pm - 10:54 pm
STT
-
DCA
8h 44m
1 stop
$337United Airlines
Tue, May 19 - Sat, May 23
Delta Logo
7:00 am - 1:51 pm
DCA
-
STT
6h 51m
1 stop
Delta Logo
4:38 pm - 11:24 pm
STT
-
DCA
6h 46m
1 stop
$338Delta
Sun, May 31 - Wed, Jun 3
American Airlines Logo
7:00 am - 4:15 pm
DCA
-
STT
9h 15m
1 stop
American Airlines Logo
12:25 pm - 7:14 pm
STT
-
DCA
6h 49m
1 stop
$343American Airlines
Sun, May 10 - Wed, May 13
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
1:22 pm - 10:15 pm
STT
-
DCA
8h 53m
1 stop
$345United Airlines
Tue, Jun 9 - Thu, Jun 18
Delta Logo
6:00 am - 2:23 pm
DCA
-
STT
8h 23m
1 stop
Delta Logo
3:33 pm - 10:44 pm
STT
-
DCA
7h 11m
1 stop
$353Delta
Thu, Jul 30 - Fri, Aug 7
United Airlines Logo
6:00 am - 3:43 pm
DCA
-
STT
9h 43m
1 stop
United Airlines Logo
1:22 pm - 10:15 pm
STT
-
DCA
8h 53m
1 stop
$355United Airlines
Sat, Aug 1 - Fri, Aug 7

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Southwest flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Our best Southwest deals on Washington, D.C. Reagan-National Airport to Saint Thomas Island flight tickets
Southwest
Sep 20
DCA9:30 pmWashington, D.C. Reagan-National
16h 20m
2 stops
STT1:50 pmSaint Thomas Island Cyril E King
Sep 26
STT2:05 pmSaint Thomas Island Cyril E King
7h 50m
1 stop
DCA9:55 pmWashington, D.C. Reagan-National
$386
Southwest
Sep 25
DCA6:00 amWashington, D.C. Reagan-National
7h 50m
1 stop
STT1:50 pmSaint Thomas Island Cyril E King
Sep 28
STT2:35 pmSaint Thomas Island Cyril E King
9h 20m
1 stop
DCA11:55 pmWashington, D.C. Reagan-National
$391
Southwest
Aug 12
DCA9:00 pmWashington, D.C. Reagan-National
16h 50m
2 stops
STT1:50 pmSaint Thomas Island Cyril E King
Aug 17
STT2:35 pmSaint Thomas Island Cyril E King
9h 20m
1 stop
DCA11:55 pmWashington, D.C. Reagan-National
$406

United Airlines flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Saint Thomas Island flight tickets
United Airlines
May 17
DCA6:00 amWashington, D.C. Reagan-National
9h 43m
1 stop
STT3:43 pmSaint Thomas Island Cyril E King
May 20
STT1:22 pmSaint Thomas Island Cyril E King
10h 36m
1 stop
DCA11:58 pmWashington, D.C. Reagan-National
$290
United Airlines
May 14
DCA6:00 amWashington, D.C. Reagan-National
9h 43m
1 stop
STT3:43 pmSaint Thomas Island Cyril E King
May 19
STT1:22 pmSaint Thomas Island Cyril E King
10h 36m
1 stop
DCA11:58 pmWashington, D.C. Reagan-National
$311
United Airlines
May 17
DCA6:00 amWashington, D.C. Reagan-National
9h 43m
1 stop
STT3:43 pmSaint Thomas Island Cyril E King
May 23
STT2:10 pmSaint Thomas Island Cyril E King
8h 44m
1 stop
DCA10:54 pmWashington, D.C. Reagan-National
$322

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Sun 5/17

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Wed 5/20

1:22 pm-11:58 pm

1 stop10h 36m

$290

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Thu 5/14

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Tue 5/19

1:22 pm-11:58 pm

1 stop10h 36m

$311

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Sun 5/17

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Sat 5/23

2:10 pm-10:54 pm

1 stop8h 44m

$322

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Tue 5/12

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Fri 5/15

2:10 pm-9:31 pm

1 stop7h 21m

$332

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Tue 5/19

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Sat 5/23

2:10 pm-10:54 pm

1 stop8h 44m

$337
Quickest round-trip

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Sun 5/31

7:00 am-1:51 pm

1 stop6h 51m

Saint Thomas Island Cyril E King

Wed 6/3

4:38 pm-11:24 pm

1 stop6h 46m

$338

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Sun 5/10

7:00 am-4:15 pm

1 stop9h 15m

Saint Thomas Island Cyril E King

Wed 5/13

12:25 pm-7:14 pm

1 stop6h 49m

$343

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Tue 6/9

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Thu 6/18

1:22 pm-10:15 pm

1 stop8h 53m

$345

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Thu 7/30

6:00 am-2:23 pm

1 stop8h 23m

Saint Thomas Island Cyril E King

Fri 8/7

3:33 pm-10:44 pm

1 stop7h 11m

$353

Washington, D.C.Saint Thomas Island

DCA - STT

DCASTT

Washington, D.C. Reagan-National

Sat 8/1

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Fri 8/7

1:22 pm-10:15 pm

1 stop8h 53m

$355

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. Reagan-National Airport and Saint Thomas Island?

What is the cheapest month to fly to Saint Thomas Island?

The month of February is another great option to travel to Saint Thomas Island, with average flight prices from Washington, D.C. Reagan-National Airport averaging around $279.

What is the cheapest day to depart on your flight to Saint Thomas Island?

On average, the least expensive day to fly to Saint Thomas Island from Washington, D.C. Reagan-National Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $460. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Reagan-National Airport to Saint Thomas Island for around $672.

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Saint Thomas Island?

You are more likely to see cheaper flights to Saint Thomas Island from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Saint Thomas Island from Washington, D.C. Reagan-National Airport for as low as $229 on momondo.

How have Washington, D.C. Reagan-National Airport to Saint Thomas Island flight prices changed over time?

As of April 2026, prices for Washington, D.C. Reagan-National Airport to Saint Thomas Island flights are approximately 71% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to Saint Thomas Island (DCA to STT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Fastest flight time

6h 12m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Saint Thomas Island takes 6h 12m
There are no direct flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Saint Thomas Island.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Saint Thomas Island

  • How far is Washington, D.C. Reagan-National to Saint Thomas Island Cyril E King by plane?

    The straight-line distance from Washington, D.C. Reagan-National to Saint Thomas Island Cyril E King is 1591.4 mi. Flights usually cover this in 6h 12m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island Cyril E King Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Saint Thomas Island Cyril E King Airport?

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Saint Thomas Island Cyril E King Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents required for your trip to Saint Thomas Island Cyril E King Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Saint Thomas Island Cyril E King Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to Saint Thomas Island?

Best airlines flying from Washington, D.C. Reagan-National Airport to Saint Thomas Island

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $153Free CancellationRating
7.9
8,463 reviews
Search Delta flights
American AirlinesPriceFrom $189Free CancellationRating
7.1
11,683 reviews
Search American Airlines flights
United AirlinesPriceFrom $190Free CancellationRating
7.4
9,677 reviews
Search United Airlines flights
JetBluePriceFrom $209Free CancellationRating
7.1
2,968 reviews
Search JetBlue flights

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Saint Thomas Island?

It is quick and easy to find Washington, D.C. to Saint Thomas Island flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Saint Thomas Island that suits you.

Can I find flights from Washington, D.C. to Saint Thomas Island with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Saint Thomas Island from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Saint Thomas Island?

Once you have performed a search for Washington, D.C. to Saint Thomas Island flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Saint Thomas Island right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Saint Thomas Island from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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