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Dulles Intl

$133+ Cheap flights from Saint Thomas Island (STT) to Dulles Intl (IAD)

STT — IAD
Oct 30 — Nov 61
Fri 10/30
Fri 11/6
1 adult, Economy
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Cheap flight deals from Saint Thomas Island to Dulles Intl

Cheapest flights from Saint Thomas Island to Dulles Intl

Fri 10/3012:07 pm -
Nonstop4h 23m
Tue 11/38:56 am -
Nonstop4h 00m
Deal found 9/25$307
Sun 10/252:00 pm -
1 stop10h 30m
Thu 10/298:56 am -
Nonstop4h 00m
Deal found 9/29$399
Wed 11/251:07 pm -
Nonstop4h 23m
Tue 12/18:56 am -
Nonstop4h 00m
Deal found 9/28$406
Sat 10/2412:09 pm -
1 stop8h 59m
Sat 10/318:56 am -
Nonstop4h 00m
Deal found 9/25$437
Thu 11/261:07 pm -
Nonstop4h 23m
Mon 11/308:56 am -
Nonstop4h 00m
Deal found 9/30$491

Find flight deals from Saint Thomas Island to Dulles Intl

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$307
(United Airlines)

One-way from

$133
(United Airlines)

Popular in

August

Cheapest in

April

Average price

$474

Good round-trip deal

$457 or less

Good one-way deal

$197 or less
Provider with most accurate pricing for Saint Thomas Island Cyril E King-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Saint Thomas Island Cyril E King-Washington, D.C. Dulles Intl flights.
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From Saint Thomas Island Cyril E King to Washington, D.C. Dulles Intl
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One-way flight from Saint Thomas Island Cyril E King to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 28% potential increase in price ($219 potential increase over avg. RT price).
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Cheapest flight prices on average. 17% potential price decrease ($83 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Saint Thomas Island Cyril E King to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Saint Thomas Island Cyril E King to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Sun 10/25

2:00 pm-12:30 am

1 stop10h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$137
Quickest round-trip

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Sat 10/24

4:45 pm-8:50 pm

Nonstop4h 05m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$266

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Fri 10/30

12:07 pm-4:30 pm

Nonstop4h 23m

Washington, D.C. Dulles Intl

Tue 11/3

8:56 am-1:56 pm

Nonstop4h 00m

$307

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Sun 11/22

3:00 pm-12:30 am

1 stop10h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$329

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Mon 3/1

5:25 pm-8:48 pm

Nonstop4h 23m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$347

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Tue 10/20

5:45 pm-8:47 pm

1 stop27h 02m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$392

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Wed 10/21

5:40 pm-8:47 pm

1 stop27h 07m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$392

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Fri 10/23

8:39 am-8:47 pm

1 stop12h 08m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$396

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Mon 10/19

5:40 pm-8:47 pm

1 stop27h 07m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$402

Saint Thomas IslandWashington, D.C.

STT Saint Thomas Island Cyril E King - IAD Washington, D.C. Dulles Intl

STTIAD

Saint Thomas Island Cyril E King

Sat 10/24

12:09 pm-9:08 pm

1 stop8h 59m

Washington, D.C. Dulles Intl

Sat 10/31

8:56 am-12:56 pm

Nonstop4h 00m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 14 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Saint Thomas Island-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Saint Thomas Island-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Saint Thomas Island-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Saint Thomas Island-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Saint Thomas Island-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Saint Thomas Island to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Saint Thomas Island with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport

What is the cheapest time of day to fly from STT to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost to fly round-trip from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Saint Thomas Island to Washington, D.C. Dulles Intl Airport flights typically cost between $351 and $379 in October.
The cheapest round-trip price found within the last 5 days was $307 on United Airlines (Oct 30-Nov 3).

The best insider tips for Saint Thomas Island to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Saint Thomas Island to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on STT

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown United Airlines from Saint Thomas Island to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,261 reviews

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
10,261 reviews
United Airlines
7.4
Good
10,261 reviews

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

  • What airport do you fly from for flights from Saint Thomas Island to Washington, D.C. Dulles Intl?

    Most people fly from Saint Thomas Island Cyril E King (STT) if they book a flight from Saint Thomas Island to Washington, D.C. Dulles Intl. On average, Cyril E King has 0 outbound flights to Washington, D.C. Dulles Intl per day from 1 airline. Saint Thomas Island Cyril E King is conveniently located just 2.8 mi from Saint Thomas Island’s city center.

  • How long is the flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

    A quick flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport can take about 4h 23m. United Airlines provides one of the quickest options available for as low as $307. There are 1608 mi between Saint Thomas Island and Washington, D.C. Dulles Intl Airport. Generally, flights for this route are nonstop.

  • What is the cheapest airline to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on United Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $261. United Airlines is currently priced 53% below the average price you’ll pay for this route.

  • What are the cheapest flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

    While on average a flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport is generally $858, our data shows the cheapest flight currently is $132. When looking at the most popular route, (Saint Thomas Island Cyril E King - Washington, D.C. Dulles Intl), you can expect to pay $360 for that flight.

  • Can I find deals for flights from Saint Thomas Island to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Saint Thomas Island to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Saint Thomas Island to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Saint Thomas Island to Dulles Intl.

  • Can I find deals for business class flights from Saint Thomas Island to Dulles Intl?

    Yes. Cheapflights offers flight deals from Saint Thomas Island to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Arlington
Owings Mills
Lanham
Chantilly
Woodbridge
Tysons
Reston
Herndon
Hyattsville
Rockville
Fredericksburg
Falls Church
Sterling
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Saint Thomas Island to Dulles Intl

Saint Thomas Island to Baltimore flights

Top airline flying from Saint Thomas Island to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$261Average$490FlexibilityNo cancel feeOn-time69%

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