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Cheap flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island from $91

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 8/14. 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

Logo
4:43 pm - 9:44 amIAD-STT
17h 01m2 stops
Logo
4:02 pm - 4:13 pmSTT-IAD
24h 11m3 stops
$385
Find Deal
Fri, Sep 5 - Mon, Sep 8
Logo
5:40 pm - 2:57 pmIAD-STT
21h 17m3 stops
Logo
10:49 am - 9:59 amSTT-IAD
23h 10m2 stops
$399
Find Deal
Thu, Sep 11 - Sun, Sep 14
Logo
4:43 pm - 9:44 amIAD-STT
17h 01m2 stops
Logo
10:49 am - 11:23 amSTT-IAD
24h 34m3 stops
$416
Find Deal
Fri, Sep 5 - Tue, Sep 9
Logo
4:39 pm - 9:49 amIAD-STT
17h 10m2 stops
Logo
10:54 am - 11:21 amSTT-IAD
24h 27m3 stops
$428
Find Deal
Mon, Oct 20 - Fri, Oct 24
American Airlines Logo
8:25 pm - 10:50 amIAD-STT
14h 25m1 stop
American Airlines Logo
12:40 pm - 6:51 pmSTT-IAD
6h 11m1 stop
$469American Airlines
Find Deal
Thu, Oct 16 - Wed, Oct 22
United Airlines Logo
8:15 am - 12:12 pmIAD-STT
3h 57mnonstop
United Airlines Logo
1:02 pm - 4:25 pmSTT-IAD
4h 23mnonstop
$485United Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
United Airlines Logo
8:15 am - 12:12 pmIAD-STT
3h 57mnonstop
United Airlines Logo
3:35 pm - 11:44 pmSTT-IAD
9h 09m1 stop
$490United Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
American Airlines Logo
8:25 pm - 10:50 amIAD-STT
14h 25m1 stop
American Airlines Logo
12:40 pm - 6:51 pmSTT-IAD
6h 11m1 stop
$494American Airlines
Find Deal
Sat, Oct 11 - Tue, Oct 14
Delta Logo
6:00 am - 2:10 pmIAD-STT
8h 10m1 stop
Delta Logo
3:23 pm - 11:21 pmSTT-IAD
7h 58m1 stop
$519Delta
Find Deal
Sat, Aug 30 - Sat, Sep 6
Delta Logo
6:00 am - 2:10 pmIAD-STT
8h 10m1 stop
Delta Logo
3:23 pm - 11:21 pmSTT-IAD
7h 58m1 stop
$549Delta
Find Deal
Wed, Sep 3 - Thu, Sep 4

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
Oct 29
IAD8:15 amWashington, D.C. Dulles Intl
3h 57m
STT12:12 pmSaint Thomas Island Cyril E King
Nov 2
STT1:02 pmSaint Thomas Island Cyril E King
4h 23m
IAD4:25 pmWashington, D.C. Dulles Intl
$485
Find similar
United Airlines
Oct 29
IAD8:15 amWashington, D.C. Dulles Intl
3h 57m
STT12:12 pmSaint Thomas Island Cyril E King
Nov 2
STT3:35 pmSaint Thomas Island Cyril E King
9h 09m
1 stop
IAD11:44 pmWashington, D.C. Dulles Intl
$490
Find similar
United Airlines
Nov 20
IAD8:15 amWashington, D.C. Dulles Intl
3h 57m
STT1:12 pmSaint Thomas Island Cyril E King
Nov 25
STT1:02 pmSaint Thomas Island Cyril E King
4h 23m
IAD4:25 pmWashington, D.C. Dulles Intl
$548
Find similar

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

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Saint Thomas Island flight tickets
Frontier
Aug 7
IAD12:24 pmWashington, D.C. Dulles Intl
28h 05m
1 stop
STT4:29 pmSaint Thomas Island Cyril E King
Aug 11
STT5:14 pmSaint Thomas Island Cyril E King
18h 42m
1 stop
IAD11:56 amWashington, D.C. Dulles Intl
$195
Find similar
Frontier
Aug 7
IAD12:24 pmWashington, D.C. Dulles Intl
28h 05m
1 stop
STT4:29 pmSaint Thomas Island Cyril E King
Aug 11
STT5:14 pmSaint Thomas Island Cyril E King
18h 42m
1 stop
IAD11:56 amWashington, D.C. Dulles Intl
$203
Find similar
Frontier
Aug 7
IAD12:24 pmWashington, D.C. Dulles Intl
28h 05m
1 stop
STT4:29 pmSaint Thomas Island Cyril E King
Aug 11
STT5:14 pmSaint Thomas Island Cyril E King
18h 42m
1 stop
IAD11:56 amWashington, D.C. Dulles Intl
$291
Find similar

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 August 2, 2025.
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

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Fri 9/5

4:43 pm-9:44 am

2 stops17h 01m

Saint Thomas Island Cyril E King

Mon 9/8

4:02 pm-4:13 pm

3 stops24h 11m

$385

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Thu 9/11

5:40 pm-2:57 pm

3 stops21h 17m

Saint Thomas Island Cyril E King

Sun 9/14

10:49 am-9:59 am

2 stops23h 10m

$399

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Fri 9/5

4:43 pm-9:44 am

2 stops17h 01m

Saint Thomas Island Cyril E King

Tue 9/9

10:49 am-11:23 am

3 stops24h 34m

$416

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Mon 10/20

4:39 pm-9:49 am

2 stops17h 10m

Saint Thomas Island Cyril E King

Fri 10/24

10:54 am-11:21 am

3 stops24h 27m

$428

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Thu 10/16

8:25 pm-10:50 am

1 stop14h 25m

Saint Thomas Island Cyril E King

Wed 10/22

12:40 pm-6:51 pm

1 stop6h 11m

$469

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Wed 10/29

8:15 am-12:12 pm

Nonstop3h 57m

Saint Thomas Island Cyril E King

Sun 11/2

1:02 pm-4:25 pm

Nonstop4h 23m

$485

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Wed 10/29

8:15 am-12:12 pm

Nonstop3h 57m

Saint Thomas Island Cyril E King

Sun 11/2

3:35 pm-11:44 pm

1 stop9h 09m

$490

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 10/11

8:25 pm-10:50 am

1 stop14h 25m

Saint Thomas Island Cyril E King

Tue 10/14

12:40 pm-6:51 pm

1 stop6h 11m

$494

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 8/30

6:00 am-2:10 pm

1 stop8h 10m

Saint Thomas Island Cyril E King

Sat 9/6

3:23 pm-11:21 pm

1 stop7h 58m

$519

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Wed 9/3

6:00 am-2:10 pm

1 stop8h 10m

Saint Thomas Island Cyril E King

Thu 9/4

3:23 pm-11:21 pm

1 stop7h 58m

$549

Flights are sorted by cheapest round-trip flights 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 January is another great option to travel to Saint Thomas Island, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $586.

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 $634. 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 $864.

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

The cheapest time of day to fly to Saint Thomas Island is in the afternoon when flights can be purchased for as low as $348. Flights to Saint Thomas Island are more costly in the morning, with an average ticket price of $715. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $691 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 $579 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 78% 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 August 2025, prices for Washington, D.C. Dulles Intl Airport to Saint Thomas Island flights are approximately 11% 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

$91

Fastest flight time

3h 56m

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 $91. 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 $385.
The fastest flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island takes 3h 56m
Direct flights go from Washington, D.C. Dulles Intl Airport to Saint Thomas Island every day.
There is 1 airport near Saint Thomas Island: 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 56m.

  • 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
Spirit AirlinesPriceFrom $295Free CancellationRating
6.3
8,054 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $460Free CancellationRating
7.4
8,904 reviews
Search United Airlines flights
DeltaPriceFrom $467Free CancellationRating
8.0
7,983 reviews
Search Delta flights
American AirlinesPriceFrom $598Free CancellationRating
7.2
10,000 reviews
Search American 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 $460 round-trip. Over the 7 United Airlines flights for this route in a normal week, average airfare is usually $698 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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