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

$67 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $268 and $273, respectively.

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

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

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Saint Thomas Island?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island.

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

Departing on a Monday is a good option for securing a great price. You can expect to save up to 34% when planning your travel around this day of the week.

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

September is one of the best times of the year to fly to Saint Thomas Island from Washington, D.C. Dulles Intl Airport. Prices for September average $605 per person but you can even find prices for as low as $220. The most expensive prices can be found in the month of April. Opting for a September flight can save you 26% on your journey compared to booking in April

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.

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.

$67+ Flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island

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

To save up to 80% on this flight, we recommend booking at least 23 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. Dulles Intl Airport to Saint Thomas Island from $566 1-2 weeks out and tickets from $898 for flights departing within the next 72 hours.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King are usually found in September or October, booked 40 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Dulles Intl to Saint Thomas Island

Round-trip from	$384 (Mytrip)
One-way from	$67 (Priceline)
Popular in	March
Cheapest in	September
Average price	$759
Good round-trip deal	$565 or less
Good one-way deal	$313 or less

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($155 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

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.

Search Deals

Find flight deals from Dulles Intl to Saint Thomas Island

Cheapest flights from Dulles Intl to Saint Thomas Island
Explore the most affordable flight options available from Dulles Intl to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

Thu 7/2411:58 amIAD - STT

2 stops21h 50mMultiple Airlines

Sun 7/2710:43 amSTT - IAD

2 stops22h 40mMultiple Airlines

Deal found 6/25

$384

Sat 11/88:11 pmIAD - STT

1 stop14h 34mAmerican Airlines

Tue 11/114:38 pmSTT - IAD

1 stop8h 19mAmerican Airlines

Deal found 6/25

$469

Thu 7/312:23 pmIAD - STT

1 stop28h 04mFrontier

Mon 7/75:14 pmSTT - IAD

1 stop18h 42mFrontier

Deal found 6/24

$476

Wed 10/298:15 amIAD - STT

Nonstop3h 57mUnited Airlines

Sun 11/21:02 pmSTT - IAD

Nonstop4h 23mUnited Airlines

Deal found 6/24

$485

Mon 9/226:00 amIAD - STT

1 stop7h 39mDelta

Mon 9/292:49 pmSTT - IAD

1 stop9h 18mDelta

Deal found 6/25

$494

Best flights from Dulles Intl to Saint Thomas Island
Discover carefully curated flight deals from Dulles Intl to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 26, 2025.

Thu 7/2411:58 amIAD - STT

2 stops21h 50mMultiple Airlines

Sun 7/2710:43 amSTT - IAD

2 stops22h 40mMultiple Airlines

Deal found 6/25

$384

Wed 9/36:00 amIAD - STT

1 stop8h 10mDelta

Wed 9/103:23 pmSTT - IAD

1 stop7h 58mDelta

Deal found 6/25

$469

Thu 7/312:23 pmIAD - STT

1 stop28h 04mFrontier

Mon 7/75:14 pmSTT - IAD

1 stop18h 42mFrontier

Deal found 6/24

$476

Sat 8/168:15 amIAD - STT

Nonstop4h 04mUnited Airlines

Sat 8/302:10 pmSTT - IAD

1 stop8h 34mUnited Airlines

Deal found 6/24

$515

Sat 8/28:06 pmIAD - STT

1 stop14h 39mAmerican Airlines

Sat 8/164:05 pmSTT - IAD

1 stop7h 52mAmerican Airlines

Deal found 6/24

$519

Last-minute flights from Dulles Intl to Saint Thomas Island
Discover last-minute flight deals from Dulles Intl to Saint Thomas Island. Data last updated June 26, 2025 and is based on user searches.

Tue 7/18:15 amIAD - STT

Nonstop4h 02mUnited Airlines

Tue 7/84:45 pmSTT - IAD

Nonstop4h 12mUnited Airlines

Deal found 6/24

$852

Thu 7/312:23 pmIAD - STT

1 stop28h 04mFrontier

Mon 7/75:14 pmSTT - IAD

1 stop18h 42mFrontier

Deal found 6/24

$476

Fri 7/45:40 pmIAD - STT

3 stops21h 54mMultiple Airlines

Wed 7/910:43 amSTT - IAD

3 stops24h 43mMultiple Airlines

Deal found 6/24

$653

Fri 7/46:00 amIAD - STT

1 stop8h 51mDelta

Thu 7/103:02 pmSTT - IAD

1 stop9h 32mDelta

Deal found 6/24

$804

Sat 7/58:06 pmIAD - STT

1 stop14h 39mAmerican Airlines

Tue 7/1511:25 amSTT - IAD

1 stop12h 33mAmerican Airlines

Deal found 6/24

$719

Thu 7/106:00 amIAD - STT

1 stop9h 00mDelta

Mon 7/143:02 pmSTT - IAD

1 stop9h 32mDelta

Deal found 6/25

$779

Wed 7/166:35 amIAD - STT

1 stop8h 47mAmerican Airlines

Wed 7/234:02 pmSTT - IAD

1 stop16h 31mAmerican Airlines

Deal found 6/24

$597

Thu 7/2411:58 amIAD - STT

2 stops21h 50mMultiple Airlines

Sun 7/2710:43 amSTT - IAD

2 stops22h 40mMultiple Airlines

Deal found 6/25

$384

Thu 7/248:15 amIAD - STT

Nonstop4h 02mUnited Airlines

Fri 8/11:19 pmSTT - IAD

1 stop22h 13mUnited Airlines

Deal found 6/25

$565

One-way flights from Dulles Intl to Saint Thomas Island
Search for one-way flight options from Dulles Intl to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated June 26, 2025.

Sun 7/1312:31 pmIAD - STT

1 stop27h 58mFrontier

Deal found 6/24

$67

Sat 8/98:25 amIAD - STT

3 stops28h 05mMultiple Airlines

Deal found 6/24

$227

Mon 7/288:15 amIAD - STT

Nonstop4h 02mUnited Airlines

Deal found 6/25

$268

Mon 7/286:35 amIAD - STT

1 stop8h 47mAmerican Airlines

Deal found 6/25

$273

Thu 8/217:22 amIAD - STT

1 stop6h 48mDelta

Deal found 6/25

$343

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

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Thu 7/24

11:58 am-9:48 am

2 stops21h 50m

Saint Thomas Island Cyril E King

Sun 7/27

10:43 am-9:23 am

2 stops22h 40m

$384

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

Wed 9/10

3:23 pm-11:21 pm

1 stop7h 58m

$469

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Thu 7/3

12:23 pm-4:27 pm

1 stop28h 04m

Saint Thomas Island Cyril E King

Mon 7/7

5:14 pm-11:56 am

1 stop18h 42m

$476

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 8/16

8:15 am-12:19 pm

Nonstop4h 04m

Saint Thomas Island Cyril E King

Sat 8/30

2:10 pm-10:44 pm

1 stop8h 34m

$515

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 8/2

8:06 pm-10:45 am

1 stop14h 39m

Saint Thomas Island Cyril E King

Sat 8/16

4:05 pm-11:57 pm

1 stop7h 52m

$519

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sun 7/13

12:31 pm-4:29 pm

1 stop27h 58m

$67

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Sat 8/9

8:25 am-12:30 pm

3 stops28h 05m

$227

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Mon 7/28

8:15 am-12:17 pm

Nonstop4h 02m

$268

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Mon 7/28

6:35 am-3:22 pm

1 stop8h 47m

$273

Washington, D.C.Saint Thomas Island

IAD - STT

IADSTT

Washington, D.C. Dulles Intl

Thu 8/21

6:00 am-2:10 pm

1 stop8h 10m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

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

Airports

IAD

For a smooth departure from IAD, use the Aerotrain to navigate between terminals efficiently, especially during busy afternoon hours.

STT

Upon arrival at STT, rental car counters are conveniently located inside baggage claim for quick access while waiting for luggage.

Our travel experts

Mark Chesnut

Expert on STT

Ramsey Qubein

Expert on IAD

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

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 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 40 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island (average of $433). Flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island in June is currently the most expensive (average of $648). 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?

Unlike in the morning, when flights are generally more expensive, you can save up to 10% on flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island by exploring options for tickets at noon.

Reviews of airlines servicing Saint Thomas Island

Read reviews from past customers who have flown Delta, United Airlines, and American 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

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,964 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,838 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Frontier

5.9

Fair

3,296 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island round-trip?
Flying on Delta is currently your cheapest option to Saint Thomas Island, with prices starting at $469. Additional round-trip tickets that might be worth considering are offered by Frontier and United Airlines, with the lowest prices starting at $476 and $515, respectively. Users have found that Delta is 31% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Saint Thomas Island one-way?
$67 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $268 and $273, respectively.
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 $527, our data indicates the cheapest price to be $313. The most popular route (Washington, D.C. Dulles Intl - Saint Thomas Island Cyril E King), is priced around $384.
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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island (average of $433). Flying from Washington, D.C. Dulles Intl Airport to Saint Thomas Island in June is currently the most expensive (average of $648). 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

St. John

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Dulles Intl to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$458	Average$697	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$467	Average$751	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$537	Average$742	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$67+ Cheap flights from Dulles Intl (IAD) to Saint Thomas Island (STT)

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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King are usually found in September or October, booked 40 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Dulles Intl to Saint Thomas Island

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Dulles Intl to Saint Thomas Island

Cheapest flights from Dulles Intl to Saint Thomas IslandExplore the most affordable flight options available from Dulles Intl to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

Explore the most affordable flight options available from Dulles Intl to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

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.

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

Airports

IAD

STT

Our travel experts

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.

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?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Saint Thomas Island. Price data was last updated on June 20, 2025.

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

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

Find hourly flight availability from Dulles Intl to Saint Thomas Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 26, 2025.

Reviews of airlines servicing Saint Thomas Island

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Saint Thomas Island. 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 into for flights to Saint Thomas Island from Washington, D.C. Dulles Intl?

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

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

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

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

How can I 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?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Saint Thomas Island

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

Top 3 airlines flying from Dulles Intl to Saint Thomas Island

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to Saint Thomas Island
Explore the most affordable flight options available from Dulles Intl to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.