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Saint Thomas Island

$149+ Cheap flights from Dulles Intl (IAD) to Saint Thomas Island (STT)

IAD — STT
Nov 29 — Dec 61
Sun 11/29
Sun 12/6
1 adult, Economy
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Find cheap flights from Dulles Intl to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King are usually found in February or April, booked 19 days in advance, depart on a Tuesday or Sunday and return on a Friday

Cheap flight deals from Dulles Intl to Saint Thomas Island

Cheapest flights from Dulles Intl to Saint Thomas Island

Fri 11/276:00 am -
1 stop6h 41m
Fri 12/44:38 pm -
1 stop6h 27m
Deal found 10/28$356
Sat 11/148:56 am -
Nonstop4h 00m
Sat 11/211:07 pm -
Nonstop4h 23m
Deal found 10/26$365
Mon 11/308:56 am -
Nonstop4h 00m
Fri 12/43:00 pm -
1 stop8h 54m
Deal found 10/28$371
Mon 12/146:00 am -
1 stop7h 52m
Mon 12/214:20 pm -
1 stop9h 16m
Deal found 10/29$372
Mon 11/97:00 am -
1 stop7h 38m
Fri 11/132:18 pm -
1 stop10h 36m
Deal found 10/26$377
Sat 12/126:00 am -
1 stop9h 20m
Sat 12/193:35 pm -
1 stop10h 06m
Deal found 10/28$379
Fri 11/278:56 am -
Nonstop4h 00m
Fri 12/41:07 pm -
Nonstop4h 23m
Deal found 10/29$380
Tue 11/38:56 am -
Nonstop4h 00m
Tue 11/101:07 pm -
Nonstop4h 23m
Deal found 10/27$384
Thu 11/268:56 am -
Nonstop4h 00m
Thu 12/33:00 pm -
1 stop7h 13m
Deal found 10/27$389

Find flight deals from Dulles Intl to Saint Thomas Island

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(United Airlines)

One-way from

$149
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$564

Good round-trip deal

$436 or less

Good one-way deal

$206 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Saint Thomas Island Cyril E King flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Saint Thomas Island Cyril E King flights.
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From Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King
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One-way flight from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 11% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King.
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Cheapflights Fare Finder

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

IADSTT

Washington, D.C. Dulles Intl

Wed 3/3

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$149

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Mon 1/18

7:17 am-3:49 pm

1 stop7h 32m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$153

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Wed 3/17

6:30 am-3:20 pm

1 stop8h 50m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$184

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Mon 2/1

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$219

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Wed 3/10

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$219

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Thu 3/4

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$219

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Wed 1/13

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$265

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Sun 11/8

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$281

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Sat 11/14

8:56 am-1:56 pm

Nonstop4h 00m

Saint Thomas Island Cyril E King

Sat 11/21

1:07 pm-4:30 pm

Nonstop4h 23m

$365

Washington, D.C.Saint Thomas Island

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

IADSTT

Washington, D.C. Dulles Intl

Mon 12/7

5:40 pm-12:05 pm

2 stops17h 25m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 21 resultsSorted by cheapest first
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3

Compare providers for flights from Dulles Intl to Saint Thomas Island

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Saint Thomas Island in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Saint Thomas Island flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Saint Thomas Island flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Saint Thomas Island flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Saint Thomas Island 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 Washington, D.C. Dulles Intl Airport-Saint Thomas Island 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 Dulles Intl to Saint Thomas Island

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

Cheapflights Insights

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

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island?

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island, you should look to book at least 18 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island (average of $378). Flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island in June is currently the most expensive (average of $704). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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

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

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Saint Thomas Island flights typically cost between $496 and $689 in January.
The cheapest round-trip price found within the last 5 days was $349 on United Airlines (Jan 28-Feb 1).

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

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

Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Washington, D.C. Dulles Intl Airport to Saint Thomas Island. 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.
Delta
7.8
Good
8,692 reviews

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.
Delta
7.8
Good
8,692 reviews
Delta
7.8
Good
8,692 reviews

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.
United Airlines
7.3
Good
10,451 reviews
Delta
7.8
Good
8,692 reviews

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.
American Airlines
7.0
Good
12,210 reviews
Delta
7.8
Good
8,692 reviews

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Related info for your journey

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

    For a flight from Washington, D.C. Dulles Intl to Saint Thomas Island, you will be flying into Cyril E King. Saint Thomas Island Cyril E King (STT) is just 2.8 mi from the center of the city. Cyril E King is the only Saint Thomas Island airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 3 airlines have flights to Saint Thomas Island Cyril E King from Washington, D.C. Dulles Intl on a regular basis.

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

    United Airlines and Delta can get you from Washington, D.C. Dulles Intl Airport to Saint Thomas Island in just under 4h. Your travel time can differ by up to 3h 53m. Airlines will cover a distance of 1608 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island round-trip?

    Flying on American Airlines is currently your cheapest option to Saint Thomas Island, with prices starting at $190. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $220 and $242, respectively. Users have found that American Airlines is 64% cheaper than the other options available to this destination.

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island? While on average our users pay $427, our data indicates the cheapest price to be $138. The most popular route (Washington, D.C. Dulles Intl - Saint Thomas Island Cyril E King), is priced around $301.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island (average of $378). Flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island in June is currently the most expensive (average of $704). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Saint Thomas Island

Baltimore to Saint Thomas Island flights
Reagan-National to Saint Thomas Island flights
Reagan-National to Christiansted flights

Top 3 airlines flying from Dulles Intl to Saint Thomas Island

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$190Average$424FlexibilityNo cancel feeOn-time71%
DeltaCheapest$220Average$525FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$242Average$536FlexibilityNo cancel feeOn-time69%

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