WAS - STT

$143 Find Cheap Flights from Washington, D.C. to Saint Thomas Island

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Saint Thomas Island departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Saint Thomas Island

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Saint Thomas Island.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Saint Thomas Island.
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Everything you should know

Cheapest round-trip
$332
Typical prices: $567-$494
Delta
Sun 9/13Thu 9/17
IAD - STT • 1 stop
Cheapest non-stop
$334
Typical prices: $563-$507
United Airlines
Sat 9/5Sat 9/12
IAD - STT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Dulles has a convenient Metro connection to downtown.
STT taxis have fixed rates; confirm before boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $332 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 4h 08m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 7% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $205 (round-trip)
Shortest trip • 6h 05m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 39% price drop
Most popular
Good to know
Good to know
+1
+1
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+1
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We hope you love your trip to Saint Thomas Island!
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Flight Deals

Cheap Flights from Washington, D.C. to Saint Thomas Island (WAS-STT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Saint Thomas Island that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Saint Thomas Island

Sun, Sep 13 - Thu, Sep 17
Delta Logo
6:00 am - 1:44 pm
IAD
-
STT
7h 44m
1 stop
Delta Logo
2:54 pm - 12:10 am
STT
-
IAD
9h 16m
1 stop
$332Delta
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
9:00 am - 12:58 pm
IAD
-
STT
3h 58mnonstop
United Airlines Logo
4:45 pm - 8:50 pm
STT
-
IAD
4h 05mnonstop
$334United Airlines
Tue, Sep 15 - Thu, Sep 24
Delta Logo
6:00 am - 1:44 pm
BWI
-
STT
7h 44m
1 stop
Delta Logo
2:54 pm - 12:16 am
STT
-
BWI
9h 22m
1 stop
$338Delta
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
9:00 am - 12:58 pm
IAD
-
STT
3h 58mnonstop
United Airlines Logo
2:10 pm - 10:59 pm
STT
-
IAD
8h 49m
1 stop
$339United Airlines
Thu, Aug 20 - Mon, Aug 24
Southwest Logo
6:00 am - 1:50 pm
DCA
-
STT
7h 50m
1 stop
Southwest Logo
2:35 pm - 11:55 pm
STT
-
DCA
9h 20m
1 stop
$348Southwest
Tue, Sep 15 - Wed, Sep 23
Delta Logo
6:00 am - 1:44 pm
IAD
-
STT
7h 44m
1 stop
Delta Logo
2:54 pm - 12:10 am
STT
-
IAD
9h 16m
1 stop
$348Delta
Sun, Aug 23 - Thu, Aug 27
American Airlines Logo
6:00 am - 12:52 pm
BWI
-
STT
6h 52m
1 stop
American Airlines Logo
4:42 pm - 11:23 am
STT
-
BWI
18h 41m
1 stop
$351American Airlines
Wed, Jul 29 - Mon, Aug 3
American Airlines Logo
5:01 am - 11:03 am
BWI
-
STT
6h 02m
1 stop
American Airlines Logo
1:49 pm - 6:26 pm
STT
-
BWI
28h 37m
1 stop
$356American Airlines
Sat, Jul 4 - Sun, Jul 12
United Airlines Logo
8:51 am - 12:58 pm
IAD
-
STT
4h 07mnonstop
United Airlines Logo
2:10 pm - 11:19 pm
STT
-
IAD
9h 09m
1 stop
$367United Airlines
Sun, Aug 23 - Sun, Aug 30
Southwest Logo
6:00 am - 1:25 pm
DCA
-
STT
7h 25m
1 stop
Southwest Logo
2:10 pm - 10:50 pm
STT
-
DCA
8h 40m
1 stop
$369Southwest
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Saint Thomas Island flights

Get data-powered insights and trends into flights from Washington, D.C. to Saint Thomas Island to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. to Saint Thomas Island?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Saint Thomas Island departing in September.

What is the cheapest Washington, D.C. to Saint Thomas Island flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. to Saint Thomas Island costs $240 on the route between Baltimore (BWI) and Saint Thomas Island (STT). Over the past month, this route was, on average, 7% cheaper than other Washington, D.C.-Saint Thomas Island routes. The most popular route is between Washington, D.C. Dulles Intl Airport (IAD) and Saint Thomas Island (STT).

What’s the cheapest day of the week to fly from Washington, D.C. to Saint Thomas Island?

The average price of all round-trip flights from Washington, D.C. to Saint Thomas Island clicked on KAYAK for each day over the last 12 months.

For Washington, D.C. to Saint Thomas Island, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Saint Thomas Island back to Washington, D.C., the best deals are generally found on Thursday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Saint Thomas Island, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Saint Thomas Island is March, where tickets cost $98 (return) on average. On the other hand, the most expensive months are September and November, where the average cost of round-trip tickets is $273 and $193 respectively.

Can I save money by flying with a layover from Washington, D.C. to Saint Thomas Island?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $430 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Saint Thomas Island, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Saint Thomas Island, you should book around 3 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Washington, D.C. to Saint Thomas Island

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on STT

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonSeptember
Cheapest flight$118
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 38% lower on average.
Flight from Baltimore to Saint Thomas Island

When to book flights from Washington, D.C. to Saint Thomas Island

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Saint Thomas Island based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Saint Thomas Island

  • What is the cheapest flight from Washington, D.C. to Saint Thomas Island?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Saint Thomas Island was $143 for a one-way ticket and $332 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Saint Thomas Island?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Saint Thomas Island?

    When flying out of Washington, D.C. you will be using one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be landing at Saint Thomas Island Cyril E King.

  • Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Saint Thomas Island?

    JetBlue, Delta, and American Airlines offer inflight Wi-Fi service on the Washington, D.C. to Saint Thomas Island flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Saint Thomas Island?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Washington, D.C. to Saint Thomas Island flight route.

  • Which airline alliances offer flights from Washington, D.C. to Saint Thomas Island?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Saint Thomas Island, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Washington, D.C. to Saint Thomas Island?

    There are nonstop flights from Washington, D.C. to Saint Thomas Island on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Saint Thomas Island, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Saint Thomas Island are Southwest and Delta. With an average price for the route of $539 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $485 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Saint Thomas Island?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Saint Thomas Island.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Saint Thomas Island?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint Thomas Island from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Saint Thomas Island?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Saint Thomas Island with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Saint Thomas Island?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint Thomas Island from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to Saint Thomas Island

  • Looking for a cheap flight? 25% of our users found flights on this route for $202 or less one-way and $340 or less round-trip.

Prefer to fly direct from Washington, D.C. to Saint Thomas Island?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. to Saint Thomas Island Cyril E King.
Find which airlines fly direct from Washington, D.C. to Saint Thomas Island Cyril E King Airport, which days they fly and book direct flights.

Direct departures

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

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

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

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Washington, D.C. to Saint Thomas Island

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Saint Thomas Island. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Saint Thomas Island? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8455 reviews
8.1Boarding
7.8Entertainment
7.8Comfort
8.5Crew
7.2Food
Airline reviews

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

10.0 ExcellentBenjamin, May 2026
CLT - MSP
Read more Delta reviews

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

TV was broken and could not shut it off. The flicking was bother me and gave me a headache. The WiFi wouldn’t work correctly, I was able to text but not search the web or surf social media. The plane itself had a lot of wear and tear it is due for an update.

JetBlue not only has the most comfortable planes, but also used to have the best customer service. Lorie Wright, the lady at the gate was very rude not only to me, but to other passengers as well. Her colleague, the gentleman was also not very friendly. They both were acting like they were doing passengers a favor. The crew on board was very nice.

Flight was on time and smooth. Customer service was decent

The space between seat rows seemed to be larger than other airlines. I didn’t check their food or entertainment since I slept most of the way. They do seem to have a lot of options for purchase though.

Kayak sucked. You gave me a confirmation number that was not useable by the jet blue system. Nor did you send any check in emails. I’ll not be using your site again. Nice work.

Direct tv did not work on flight Short flight so no good service offered Arrived early to destination and had to wait for gate to open. Deplaned LATER than if we arrived on time!! Poor planning Jet blue has had something go wrong on every flight I’ve taken with them in last five years. Terribly run airline

Given us a free miles or free flight for waiting for 9 hours I didn’t get home till 5am in the morning and I was supposed to be home at 9:30 touch down.

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

Jet blue was great But the Jayak system Wasa pure nightmare and wasted so much of my time and energy by not giving me a way to access jet blue to check in the flight back I didn’t even get the number confirmation code 24 hours before. Because I didn’t receive the email with the confirmation code I could NoT CHECk IN. I spoke to a kayak third party and they informed me I could not carry a carry on, on the flight which caused me so much extra stress it was just too much. You can be sure I will not be using it recommending your site. Again.

There was a screen but no earphones that could use the older input so I could listen to anything.

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Delays with no explanation. It could have been handled better.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

There was no flight. Spirit went bankrupt Right before my departure and kayak did not refund me any money. I would like my refund kayak. How can I get it? Please let me know. Thank you

Flights were canceled due to airline shutting down and haven’t received a reimbursement. Had to book last minute new flights which were expensive

My flight was canceled the morning of the flight. I had to rebook a flight with a different airline that cost me $900 out of my pocket

Are you serious? I know this is an automated message but how can you not update the system?

Had a flight change had to get a credit.will I get my money back.

Shut down without prior notice End up with spending lots of extra $$$

There was a crack in my window seal. And Spirit is now closed forever.

The company went out of business and now I'm stuck in Ft. Lauderdale. Would not recommend.

Spirit changed flight times by 12 hours with coming and going so I refunded tickets and drove

The airline cancel mi flight, lost a lot of money!!!

Everything you need to know for your flight from Washington, D.C. to Saint Thomas Island

Information on your arrival and departure airports