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Cheap flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island from $123

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. Dulles Intl Airport to Saint Thomas Island departing on 4/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:15 am - 12:20 pm
IAD
-
STT
4h 05mnonstop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$241United Airlines
Wed, Apr 15 - Mon, Apr 20
United Airlines Logo
6:15 am - 5:00 pm
IAD
-
STT
10h 45m
1 stop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$246United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
6:15 am - 3:31 pm
IAD
-
STT
9h 16m
1 stop
United Airlines Logo
2:10 pm - 11:25 pm
STT
-
IAD
9h 15m
1 stop
$250United Airlines
Sun, Apr 26 - Thu, Apr 30
United Airlines Logo
8:15 am - 12:20 pm
IAD
-
STT
4h 05mnonstop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$261United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
8:15 am - 12:20 pm
IAD
-
STT
4h 05mnonstop
United Airlines Logo
1:22 pm - 9:04 pm
STT
-
IAD
7h 42m
1 stop
$266United Airlines
Mon, Apr 13 - Thu, Apr 16
United Airlines Logo
6:00 am - 3:43 pm
IAD
-
STT
9h 43m
1 stop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$267United Airlines
Sat, May 9 - Wed, May 13
United Airlines Logo
6:15 am - 5:00 pm
IAD
-
STT
10h 45m
1 stop
United Airlines Logo
1:22 pm - 10:49 pm
STT
-
IAD
9h 27m
1 stop
$270United Airlines
Sat, May 9 - Wed, May 13
United Airlines Logo
8:15 am - 12:20 pm
IAD
-
STT
4h 05mnonstop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$274United Airlines
Mon, Apr 13 - Mon, Apr 20
United Airlines Logo
6:00 am - 3:43 pm
IAD
-
STT
9h 43m
1 stop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$279United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
8:15 am - 12:20 pm
IAD
-
STT
4h 05mnonstop
United Airlines Logo
4:45 pm - 8:58 pm
STT
-
IAD
4h 13mnonstop
$282United Airlines
Fri, Apr 10 - Thu, Apr 16

United Airlines flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Saint Thomas Island flight tickets
United Airlines
Apr 15
IAD8:15 amWashington, D.C. Dulles Intl
4h 05m
STT12:20 pmSaint Thomas Island Cyril E King
Apr 20
STT4:45 pmSaint Thomas Island Cyril E King
4h 13m
IAD8:58 pmWashington, D.C. Dulles Intl
$241
United Airlines
Apr 25
IAD6:15 amWashington, D.C. Dulles Intl
10h 45m
1 stop
STT5:00 pmSaint Thomas Island Cyril E King
Apr 29
STT4:45 pmSaint Thomas Island Cyril E King
4h 13m
IAD8:58 pmWashington, D.C. Dulles Intl
$246
United Airlines
Apr 26
IAD6:00 amWashington, D.C. Dulles Intl
7h 08m
1 stop
STT1:08 pmSaint Thomas Island Cyril E King
Apr 29
STT1:22 pmSaint Thomas Island Cyril E King
7h 42m
1 stop
IAD9:04 pmWashington, D.C. Dulles Intl
$250

Delta flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Saint Thomas Island flight tickets
Delta
Apr 13
IAD6:00 amWashington, D.C. Dulles Intl
7h 51m
1 stop
STT1:51 pmSaint Thomas Island Cyril E King
Apr 17
STT1:59 pmSaint Thomas Island Cyril E King
10h 43m
1 stop
IAD12:42 amWashington, D.C. Dulles Intl
$302
Delta
Apr 9
IAD7:18 amWashington, D.C. Dulles Intl
7h 30m
1 stop
STT2:48 pmSaint Thomas Island Cyril E King
Apr 16
STT1:59 pmSaint Thomas Island Cyril E King
10h 43m
1 stop
IAD12:42 amWashington, D.C. Dulles Intl
$318
Delta
Aug 31
IAD6:00 amWashington, D.C. Dulles Intl
7h 52m
1 stop
STT1:52 pmSaint Thomas Island Cyril E King
Sep 2
STT3:02 pmSaint Thomas Island Cyril E King
9h 08m
1 stop
IAD12:10 amWashington, D.C. Dulles Intl
$339

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl 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 March 17, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Wed 4/15

8:15 am-12:20 pm

Nonstop4h 05m

Saint Thomas Island Cyril E King

Mon 4/20

4:45 pm-8:58 pm

Nonstop4h 13m

$241

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 4/25

6:15 am-5:00 pm

1 stop10h 45m

Saint Thomas Island Cyril E King

Wed 4/29

4:45 pm-8:58 pm

Nonstop4h 13m

$246

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sun 4/26

6:15 am-3:31 pm

1 stop9h 16m

Saint Thomas Island Cyril E King

Thu 4/30

2:10 pm-11:25 pm

1 stop9h 15m

$250

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Tue 4/14

8:15 am-12:20 pm

Nonstop4h 05m

Saint Thomas Island Cyril E King

Tue 4/21

4:45 pm-8:58 pm

Nonstop4h 13m

$261

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Mon 4/13

8:15 am-12:20 pm

Nonstop4h 05m

Saint Thomas Island Cyril E King

Thu 4/16

1:22 pm-9:04 pm

1 stop7h 42m

$266

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 5/9

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Wed 5/13

4:45 pm-8:58 pm

Nonstop4h 13m

$267

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 5/9

6:15 am-5:00 pm

1 stop10h 45m

Saint Thomas Island Cyril E King

Wed 5/13

1:22 pm-10:49 pm

1 stop9h 27m

$270

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Mon 4/13

8:15 am-12:20 pm

Nonstop4h 05m

Saint Thomas Island Cyril E King

Mon 4/20

4:45 pm-8:58 pm

Nonstop4h 13m

$274

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 4/18

6:00 am-3:43 pm

1 stop9h 43m

Saint Thomas Island Cyril E King

Wed 4/22

4:45 pm-8:58 pm

Nonstop4h 13m

$279

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Fri 4/10

8:15 am-12:20 pm

Nonstop4h 05m

Saint Thomas Island Cyril E King

Thu 4/16

4:45 pm-8:58 pm

Nonstop4h 13m

$282

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. Dulles Intl 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 cheapest month to fly to Saint Thomas Island?

The month of September is another great option to travel to Saint Thomas Island, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $494.

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. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $492. 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. Dulles Intl Airport to Saint Thomas Island for around $717.

What is the cheapest Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King flight route?

Fly from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King for the best Washington, D.C. Dulles Intl - Saint Thomas Island Cyril E King flight prices

How far in advance should I book a flight to Saint Thomas Island?

You are more likely to see cheaper flights to Saint Thomas Island from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $580 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. Dulles Intl Airport for as low as $383 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King flights?

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Saint Thomas Island flights?

You could potentially save up to 5% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Saint Thomas Island flight.

How have Washington, D.C. Dulles Intl Airport to Saint Thomas Island flight prices changed over time?

As of March 2026, prices for Washington, D.C. Dulles Intl Airport to Saint Thomas Island flights are approximately 61% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl 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. Dulles Intl Airport to Saint Thomas Island (IAD to STT) flight deals and tips

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

Best Price Found

$112

Fastest flight time

3h 57m

Direct flights

Every day

Airports in Saint Thomas Island

1 airport
The best one-way flight to Saint Thomas Island from Washington, D.C. Dulles Intl Airport in the past 72 hours is $112. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Saint Thomas Island found on momondo in the last 72 hours is $322.
The fastest flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island takes 3h 57m
Direct flights go from Washington, D.C. Dulles Intl Airport to Saint Thomas Island every day.
There is 1 airport in Saint Thomas Island. From Washington, D.C. Dulles Intl Airport there are direct flights to Saint Thomas Island Cyril E King (STT).
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King by plane?

    The distance between Washington, D.C. Dulles Intl and Saint Thomas Island Cyril E King is about 1608.5 mi. In terms of flight time, this usually takes a little over 3h 57m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island Cyril E King Airport are updated daily.

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

  • How old do you have to be to fly from Washington, D.C. Dulles Intl 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. Dulles Intl 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 required travel and health documents for your Saint Thomas Island Cyril E King Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Saint Thomas Island Cyril E King Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Saint Thomas Island?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Saint Thomas Island?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $190Free CancellationRating
7.1
11,466 reviews
Search American Airlines flights
JetBluePriceFrom $197Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
DeltaPriceFrom $220Free CancellationRating
7.9
8,288 reviews
Search Delta flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,431 reviews
Search United Airlines flights

  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Saint Thomas Island

    United Airlines flight deals from Washington, D.C. Dulles Intl Airport to Saint Thomas Island start from $236 round-trip. Over the 7 United Airlines flights for this route in a normal week, average airfare is usually $570 round-trip - but some users have found much cheaper deals with momondo.

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?

Finding the right flight to Saint Thomas Island from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Saint Thomas Island quick and easy, saving you time and money.

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

All flight searches from Washington, D.C. to Saint Thomas Island on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Washington, D.C. to Saint Thomas Island flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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?

If you are simply researching potential flights to Saint Thomas Island, momondo offers a useful price alert feature which will track prices for flights to Saint Thomas Island from Washington, D.C. and alert you when they change.

An easier way to manage your Saint Thomas Island trip

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