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

Flying on American Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $469. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $533 and $644, respectively. American Airlines is currently priced 24% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport one-way?

One-way options have recently been found by users for as low as $274 on United Airlines. Other airlines that offer cheap prices include Delta from $277 and Sun Country Air from $324 one-way.

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

Currently, August is the cheapest month in which you can book a flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Saint Thomas Island to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $383). 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 day to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Saint Thomas Island to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

Flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C. Dulles Intl Airport.

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

Our data shows that October tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Saint Thomas Island. Users have commonly found prices around $508 for the month, but tickets can be as low as $301. Due to multiple factors, prepare for potentially higher prices in March.

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.

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 1 outbound flight 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.

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.

$274+ Flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Saint Thomas Island to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$469 (American Airlines)
One-way from	$274 (United Airlines)
Popular in	November
Cheapest in	September
Average price	$621
Good round-trip deal	$568 or less
Good one-way deal	$205 or less

Provider with most accurate pricing for Saint Thomas Island Cyril E King-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Saint Thomas Island Cyril E King-Washington, D.C. Dulles Intl flights.

Search Deals

From Saint Thomas Island Cyril E King to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Saint Thomas Island Cyril E King to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($56 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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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Find flight deals from Saint Thomas Island to Dulles Intl

Cheapest flights from Saint Thomas Island to Dulles Intl
Explore the most affordable flight options available from Saint Thomas Island to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Thu 5/151:17 pmSTT - IAD

1 stop11h 11mDelta

Mon 5/197:05 amIAD - STT

1 stop8h 05mDelta

Deal found 4/2

$469

Thu 6/193:42 pmSTT - IAD

1 stop19h 18mAmerican Airlines

Sat 6/285:41 pmIAD - STT

1 stop17h 08mAmerican Airlines

Deal found 4/1

$519

Wed 8/64:45 pmSTT - IAD

Nonstop4h 12mUnited Airlines

Sun 8/1710:15 pmIAD - STT

2 stops17h 28mUnited Airlines

Deal found 3/31

$533

Best flights from Saint Thomas Island to Dulles Intl
Discover carefully curated flight deals from Saint Thomas Island to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2025.

Fri 5/233:19 pmSTT - IAD

1 stop17h 19mAmerican Airlines

Sun 6/15:26 pmIAD - STT

1 stop17h 29mAmerican Airlines

Deal found 4/1

$469

Wed 8/64:45 pmSTT - IAD

Nonstop4h 12mUnited Airlines

Sun 8/1710:15 pmIAD - STT

2 stops17h 28mUnited Airlines

Deal found 3/31

$533

Wed 5/72:51 pmSTT - IAD

1 stop8h 44mDelta

Sun 5/116:00 amIAD - STT

1 stop9h 10mDelta

Deal found 4/1

$644

Last-minute flights from Saint Thomas Island to Dulles Intl
Discover last-minute flight deals from Saint Thomas Island to Dulles Intl. Data last updated April 2, 2025 and is based on user searches.

Thu 5/151:17 pmSTT - IAD

1 stop11h 11mDelta

Mon 5/197:05 amIAD - STT

1 stop8h 05mDelta

Deal found 4/2

$469

Thu 5/154:45 pmSTT - IAD

Nonstop4h 12mUnited Airlines

Mon 5/198:57 amIAD - STT

Nonstop4h 04mUnited Airlines

Deal found 4/2

$550

Fri 5/233:19 pmSTT - IAD

1 stop17h 19mAmerican Airlines

Sun 6/15:26 pmIAD - STT

2 stops19h 18mAmerican Airlines

Deal found 4/1

$656

One-way flights from Saint Thomas Island to Dulles Intl
Search for one-way flight options from Saint Thomas Island to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated April 2, 2025.

Wed 5/142:10 pmSTT - IAD

2 stops17h 01mUnited Airlines

Deal found 4/1

$274

Wed 5/142:51 pmSTT - IAD

1 stop8h 44mDelta

Deal found 4/1

$277

Sun 4/63:30 pmSTT - IAD

2 stops19h 37mSun Country Air

Deal found 4/1

$324

Sun 4/61:55 pmSTT - IAD

3 stops21h 25mMultiple Airlines

Deal found 4/1

$326

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

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Fri 5/23

3:19 pm-8:38 am

1 stop17h 19m

Washington, D.C. Dulles Intl

Sun 6/1

5:26 pm-10:55 am

1 stop17h 29m

$469

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Wed 8/6

4:45 pm-8:57 pm

Nonstop4h 12m

Washington, D.C. Dulles Intl

Sun 8/17

10:15 pm-3:43 pm

2 stops17h 28m

$533

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Wed 5/7

2:51 pm-11:35 pm

1 stop8h 44m

Washington, D.C. Dulles Intl

Sun 5/11

6:00 am-3:10 pm

1 stop9h 10m

$644

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Wed 5/14

2:10 pm-7:11 am

2 stops17h 01m

$274

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Wed 5/14

2:51 pm-11:35 pm

1 stop8h 44m

$277

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Sun 4/6

3:30 pm-11:07 am

2 stops19h 37m

$324

Saint Thomas IslandWashington, D.C.

STT - IAD

STTIAD

Saint Thomas Island Cyril E King

Sun 4/6

1:55 pm-11:20 am

3 stops21h 25m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Compare providers for flights from Saint Thomas Island to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Saint Thomas Island to Dulles Intl in April.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 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.

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

Airports

STT

STT offers quick screening times at TSA and easy check-in, making it one of the most convenient major airports in Florida.

IAD

From IAD, the Washington Metro Silver line reaches downtown in less than 40 minutes, offering a cheap city transit option.

Our travel experts

Mark Chesnut

Expert on STT

Ramsey Qubein

Expert on IAD

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

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

It’s typically best to fly out from Saint Thomas Island to Washington, D.C. Dulles Intl Airport at noon. Doing so could potentially save you 5% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from Saint Thomas Island to Washington, D.C. Dulles Intl Airport

The most flights from STT to IAD are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,898 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,616 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Sun Country Air

6.9

Okay

349 reviews

Delta

8.0

Very good

7,898 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 1 outbound flight 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.
What are the cheapest airlines flying from Saint Thomas Island to Washington, D.C. Dulles Intl Airport round-trip?
Flying on American Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $469. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $533 and $644, respectively. American Airlines is currently priced 24% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport one-way?
One-way options have recently been found by users for as low as $274 on United Airlines. Other airlines that offer cheap prices include Delta from $277 and Sun Country Air from $324 one-way.
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 $573, our data shows the cheapest flight currently is $160. When looking at the most popular route, (Saint Thomas Island Cyril E King - Washington, D.C. Dulles Intl), you can expect to pay $533 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.
What is the cheapest month to book a flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Saint Thomas Island to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $383). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

Rockville

Fredericksburg

Woodbridge

Gaithersburg

Linthicum Heights

Silver Spring

Falls Church

Laurel

Easton

Herndon

Sterling

Bowie

Gettysburg

National Harbor

Oxon Hill

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Top airline flying from Saint Thomas Island to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$508	Average$723	FlexibilityNo cancel fee	On-time69%

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$274+ Cheap flights from Saint Thomas Island (STT) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Saint Thomas Island to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Saint Thomas Island to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Saint Thomas Island to Dulles Intl

Cheapest flights from Saint Thomas Island to Dulles IntlExplore the most affordable flight options available from Saint Thomas Island to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Explore the most affordable flight options available from Saint Thomas Island to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

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.

Compare providers for flights from Saint Thomas Island to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Saint Thomas Island to Dulles Intl in April.

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

Airports

STT

IAD

Our travel experts

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.

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?

Find hourly flight availability from Saint Thomas Island to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 2, 2025.

Weekly flight availability from Saint Thomas Island to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Saint Thomas Island to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

What are the cheapest airlines to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport one-way?

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

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

How can I 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?

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

Traveling to a place near Saint Thomas Island?

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Alternative routes for Saint Thomas Island to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Saint Thomas Island to Dulles Intl

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Cheapest flights from Saint Thomas Island to Dulles Intl
Explore the most affordable flight options available from Saint Thomas Island to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.