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WAS - BKK

Find cheap flights from Washington, D.C. to Bangkok from $542

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 Suvarnabhumi departing on 8/5. 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
0 bags
Fri 6/7
Fri 6/14

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Bangkok.
In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

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Cheap flight deals from Washington, D.C. to Suvarnabhumi (WAS-BKK)

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 Suvarnabhumi 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 and deals for you by selecting your travel dates.
Choose your dates
9:20 am - 10:00 amDCA-BKK
37h 40m2 stops
6:30 am - 8:59 pmBKK-DCA
25h 29m2 stops
$1,040
Find Deal
Mon, Sep 9 - Wed, Sep 18
10:55 am - 7:05 pmIAD-BKK
21h 10m1 stop
8:00 pm - 8:45 amBKK-IAD
23h 45m1 stop
$1,050JetBlue
Find Deal
Tue, Aug 6 - Tue, Sep 3
9:50 pm - 3:25 pmIAD-BKK
30h 35m1 stop
11:05 pm - 2:45 pmBKK-IAD
26h 40m1 stop
$1,118Turkish Airlines
Find Deal
Tue, Aug 6 - Mon, Sep 2
9:50 pm - 6:05 amIAD-BKK
21h 15m1 stop
7:40 am - 7:55 pmBKK-IAD
23h 15m1 stop
$1,123Turkish Airlines
Find Deal
Tue, May 14 - Mon, Jun 3
10:55 am - 7:25 pmIAD-BKK
21h 30m1 stop
8:00 pm - 8:45 amBKK-IAD
23h 45m1 stop
$1,163Qatar Airways
Find Deal
Mon, Aug 5 - Sun, Sep 15
10:55 am - 7:05 pmIAD-BKK
21h 10m1 stop
9:45 am - 4:10 pmBKK-IAD
41h 25m1 stop
$1,219Qatar Airways
Find Deal
Wed, May 15 - Sun, May 19
6:00 am - 11:35 pmBWI-BKK
30h 35m2 stops
9:40 pm - 12:45 amBKK-BWI
38h 05m2 stops
$1,259Delta
Find Deal
Wed, Aug 28 - Sun, Sep 15
9:36 am - 11:35 pmBWI-BKK
26h 59m2 stops
9:30 pm - 11:32 amBKK-BWI
26h 02m2 stops
$1,359Delta
Find Deal
Wed, Oct 23 - Mon, Dec 16
6:00 am - 12:20 amBWI-BKK
31h 20m2 stops
1:00 am - 4:17 pmBKK-BWI
27h 17m2 stops
$1,366Korean Air
Find Deal
Thu, Oct 31 - Thu, Nov 7
10:05 am - 11:35 pmIAD-BKK
26h 30m2 stops
9:40 pm - 11:15 amBKK-IAD
24h 35m1 stop
$1,381Korean Air
Find Deal
Mon, Jul 29 - Wed, Sep 25

Flights from Washington, D.C. to Suvarnabhumi - Travel Insights & Trends

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

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

The average price of all flights from Washington, D.C. to Bangkok Suvarnabhumi Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Washington, D.C. to Bangkok, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Bangkok, Tuesday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from Washington, D.C. to Bangkok Suvarnabhumi Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport, 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 Bangkok Suvarnabhumi Airport is September, where tickets cost $1,173 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,741 and $1,729 respectively.

How far in advance should I book a flight from Washington, D.C. to Bangkok Suvarnabhumi Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. to Bangkok Suvarnabhumi Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 84 days before departure.

Which airlines provide the cheapest flights from Washington, D.C. to Bangkok?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Bangkok from Washington, D.C. were found on Turkish Airlines ($542) and Cathay Pacific ($592), and the lowest round-trip tickets were found on JetBlue ($1,050) and Cathay Pacific ($1,054).

Good to know

Low season

September

High season

December

Cheapest flight

$542
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Washington Dulles Airport to Bangkok Suvarnabhumi Airport

When to book flights from Washington, D.C. to Suvarnabhumi

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Suvarnabhumi 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 Washington, D.C. to Bangkok flights

  • What is the cheapest flight from Washington, D.C. to Bangkok Suvarnabhumi Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Bangkok Suvarnabhumi Airport was $542 for a one-way ticket and $1,040 for a round-trip.

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

    Yes, you’ll need a passport to travel to Bangkok from Washington, D.C..

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

    Washington, D.C. has 2 major airports: Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl. Bangkok Suvarnabhumi is the only airport in Bangkok. You’ll usually find the cheapest deals if you fly from Washington Dulles Airport.

  • Which aircraft models fly most regularly from Washington, D.C. to Bangkok?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Bangkok?

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

  • What is the most popular layover when flying to Bangkok from Washington, D.C.?

    Incheon is the most popular layover city among KAYAK users traveling from Washington, D.C. to Bangkok.

  • Which is the best airline for flights from Washington, D.C. to Bangkok, Korean Air or ANA?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Bangkok are Korean Air and ANA. With an average price for the route of $1,383 and an overall rating of 8.5, Korean Air is the most popular choice. ANA is also a great choice for the route, with an average price of $1,321 and an overall rating of 8.4.

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

    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 Bangkok.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok 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 Bangkok?

    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 Bangkok 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 Bangkok?

    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 Bangkok from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Washington, D.C. to Suvarnabhumi

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Bangkok. 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 Suvarnabhumi? 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.
8.5
Korean AirOverall score based on 1181 reviews
8.6Boarding
8.2Entertainment
8.3Comfort
8.2Food
8.8Crew
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

10.0 ExcellentAnonymous, Apr 2024IAD - ICN
Read more about Korean Air reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

Flight arrived early, fantastic, since it is short flight, no food being served

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

Staff and crew are wonderful, professional and courteous. Meal is delicious and snacks can be improved. Entertainment needs improvement, pls update selections of movies. I appreciate that our flight was on time

Flying with ANA is always a breeze. Seats are very comfortable.

The staff, ground and air, at ANA was very helpful and friendly during check in, boarding and during the flight. This is the reason why I always fly ANA whenever I go to Manila. The food was not the best but the flight crew more than makes up for the shortfall.

First I will say this was really NOT an ANA flight. ANA used a UNITED jet to perform this flight. I specifically booked with ANA because I did NOT WANT TO FLY UNITED FOR INTERNATIONAL FLIGHTS. So to spend $1800.00 and then discover after booking that it was going to be handled by United was very disappointing. I will be more careful next time when I book. The interior was very cramped in economy class; the dinner meal was terrible and also had extremely small portions for an international flight - the bread roll was ice cold and stale - that salad was very wilted; I’ve never had a “snack” that was so salty that it was difficult to eat; the breakfast “waffle” was practically unrecognizable. Really horrible meals for a very expensive international flight. Bathroom floor was also pretty dirty. I’m hoping my return flight is a real ANA airplane that is cleaned and serviced by ANA personnel with ANA meals. I will never book with ANA again if they continue to use UNITED airline jets. Yuck!!!🤢

It was ok I thought because my flight was 1pm i was expecting to have lunch but it didn’t and after 7 hr finally dinner time was only chicken sandwich and next breakfast was an hour before plane land in Tokyo. so I should bring some food with me. Japanese flight attend was nice but the other was chewing gum and how she ask and respond to customers was not professional I felt. Maybe because Japan flight attendant is highly train and everyone looked very dress and professional so I was kind disappointed. I like that the bathroom was very clean .

Seat was roomy enough . The Asian selection for a meal was good . The tortellini was not very good. Service was excellent. O

It was very good. Lots of room with superior food and service. I will not hesitate to fly ANA in the future!

Japan and China airlines were incredible. On board service was impeccable. All the flight attendants were helpful, friendly, and always smiling. Airplanes were very clean. The boarding crew was extremely accommodating and very nice as well. Overall I was extremely impressed.

I chose my seat for the window: there wasn’t a window in my row. The charging function for my device didn’t work.

I slept during flight so didn’t eat at all. Very kind flight attendants.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

Operated by American Airlines. Very chaotic and the crew was bit rough responding any enquiries. Restricted leg space.. Qatar would have been better

Qatar airways from Doha to guangzhau was excellent big bird Boeing 777 more room and smoothly flight, I Love it

It was good no problems made it on time for the next flight overseas!

The made us waiting and held our passports and boarding pass making us miss our flights

Not impressed. Only allowed one carry on on such a long flight.

The flight was good but my neighbor had the vent open full power for the whole flight and because the air was blowing from the side instead of from the top and I got very cold and ended up with a sore throat.

Bad experience with the delay n long wait time for connecting flight after missing the connection flight from Doha.

Wore experience due to delay and took me 3 days to reach my destination.

All over with Qatar airlines my experience was really bad due to delays and then putting me on different airlines and after 8 hours of wait I had to listen to their is no plane to fly for another 24 hours. Wore experience ever.

Excellent will be flying again in May with Qatar. to Botswana.

Excellent service and comfort from the moment you check in. Flight crew is hyper focused on making passengers comfortable and at ease. It’s like a flying hotel!

Only chicken as a meat dish through out the flight

Nothing really was great as such. Seen other no name airlines perform better.

Quality of service on board was very inconsistent. FA service primarily seemed robotic and they barely engaged with passengers

I’m unclear why I had to pay extra for assigned seats as Turkish airlines did not honor the seating. We were placed across the aisle from each other on TK 34, and were seated behind one another on TK 694. Because my name was misspelled on e-ticket (Klawiter, instead of Klawitter) I could not log onto website to get the connection gate number in Istanbul. The monitors in the airport were a jumbled mess 1/2 Arabic and 1/2 English.

The airplane from IAD to Istanbul was too old. The chairs were to tight and uncomfortable. I continued my travel from Istanbul to Bangkok. This airplane was better and newer than the first one. Even food was better.

On line check in needs a lot of improvement. I tried and gave up.

They use a smaller international plane and quarters are tighter, space smaller, and the flight is still 12 hours, then fight attendants are ruff, food is bad, cherry juice spilled by flight attendant and she comes back to ask why have we not changed yet could it be we didn’t have any clothes to change into and seat is all wet and we had to sit there for 12 hours

Food not good, flight attendants not the best, not accommodating very ruff

the female flight attendant was racist towards me. I could tell she treated the two other passengers next to me with more softness.

Book cheap flights from Washington, D.C. to Bangkok

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Bangkok found on KAYAK in the last 72 hours.
8/5Mon
1 stopTurkish Airlines
35h 45mIAD-BKK
$542
7/23Tue
3 stops
39h 17mBWI-BKK
$556
8/5Mon
2 stopsDelta
30h 25mBWI-BKK
$700
11/3Sun
2 stopsKorean Air
27h 30mBWI-BKK
$746
11/1Fri
2 stopsKorean Air
28h 30mBWI-BKK
$769
5/13Mon
1 stopQatar Airways
22h 05mIAD-BKK
$806
6/11Tue
1 stopQatar Airways
39h 15mIAD-BKK
$840
8/1Thu
1 stopANA
40h 05mIAD-BKK
$849
7/8Mon
2 stopsDelta
30h 25mBWI-BKK
$1,042
7/11Thu
1 stopANA
40h 15mIAD-BKK
$1,541

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Last minute flights from Washington, D.C. to Suvarnabhumi

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Bangkok that are departing in the next 10 days.
5/8Wed
multi-stopSAUDIA
55h 35mIAD-BKK
5/24Fri
multi-stopSAUDIA
24h 30mBKK-IAD
$1,100
5/12Sun
multi-stopTurkish Airlines
21h 15mIAD-BKK
5/24Fri
multi-stopTurkish Airlines
26h 40mBKK-IAD
$1,135
5/9Thu
multi-stopQatar Airways
28h 40mIAD-BKK
6/7Fri
multi-stopQatar Airways
42h 05mBKK-IAD
$1,244
5/11Sat
multi-stopQatar Airways
33h 10mIAD-BKK
6/15Sat
multi-stopQatar Airways
34h 00mBKK-IAD
$1,333
5/12Sun
multi-stopANA
29h 10mIAD-BKK
6/14Fri
multi-stopANA
24h 00mBKK-IAD
$1,554
5/9Thu
multi-stopANA
41h 38mBWI-BKK
6/7Fri
multi-stopANA
25h 32mBKK-BWI
$1,560
5/9Thu
multi-stopEmirates
46h 50mIAD-BKK
6/6Thu
multi-stopEmirates
42h 05mBKK-IAD
$1,620
5/12Sun
multi-stopEmirates
42h 25mIAD-BKK
5/23Thu
multi-stopEmirates
40h 10mBKK-IAD
$1,723
5/9Thu
multi-stopKorean Air
28h 45mBWI-BKK
6/6Thu
multi-stopKorean Air
25h 15mBKK-BWI
$2,072
5/8Wed
multi-stopKorean Air
26h 33mBWI-BKK
5/14Tue
multi-stopKorean Air
26h 47mBKK-BWI
$3,445

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Flights to Bangkok

Destination:

Bangkok (BKK)Thailand

Return flight deals:

Bangkok - Washington, D.C.

Cabin classes: