Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

WAS - BKK

$410 Find cheap flights from Washington, D.C. to Bangkok

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 8/31. 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
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights 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.
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 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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
8:10 pm - 1:40 pmIAD-BKK
30h 30m1 stop
1:05 am - 3:45 pmBKK-IAD
26h 40m1 stop
$745SAUDIA
Find Deal
Sat, Nov 2 - Wed, Dec 4
7:10 pm - 1:45 pmIAD-BKK
31h 35m1 stop
1:05 am - 3:45 pmBKK-IAD
26h 40m1 stop
$774SAUDIA
Find Deal
Sat, Sep 7 - Wed, Dec 18
9:50 pm - 10:50 amIAD-BKK
26h 00m1 stop
11:05 pm - 7:55 pmBKK-IAD
31h 50m1 stop
$951Turkish Airlines
Find Deal
Tue, Aug 20 - Tue, Oct 8
9:50 pm - 3:25 pmIAD-BKK
30h 35m1 stop
7:40 am - 7:55 pmBKK-IAD
23h 15m1 stop
$952Turkish Airlines
Find Deal
Tue, Sep 24 - Tue, Oct 8
10:55 am - 7:25 pmIAD-BKK
21h 30m1 stop
8:00 pm - 8:45 amBKK-IAD
23h 45m1 stop
$956Qatar Airways
Find Deal
Fri, Sep 6 - Sun, Sep 15
9:05 pm - 7:05 amIAD-BKK
23h 00m1 stop
2:10 am - 3:55 pmBKK-IAD
25h 45m1 stop
$964Qatar Airways
Find Deal
Wed, Oct 23 - Tue, Nov 5
4:40 pm - 11:35 pmBWI-BKK
43h 55m2 stops
9:40 pm - 12:45 amBKK-BWI
38h 05m2 stops
$1,259Delta
Find Deal
Wed, Aug 28 - Sun, Sep 15
7:05 am - 11:35 pmBWI-BKK
29h 30m2 stops
9:50 am - 11:06 pmBKK-BWI
24h 16m2 stops
$1,359Delta
Find Deal
Sun, Aug 18 - Mon, Sep 9
6:00 am - 9:30 pmBWI-BKK
27h 30m2 stops
9:40 am - 4:17 pmBKK-BWI
42h 37m2 stops
$1,372Korean Air
Find Deal
Sat, Nov 23 - Fri, Nov 29
6:00 am - 11:35 pmBWI-BKK
30h 35m2 stops
1:00 am - 4:17 pmBKK-BWI
26h 17m2 stops
$1,386Korean Air
Find Deal
Tue, Oct 22 - Tue, Oct 29

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 Sundays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Bangkok, Thursday is the cheapest day to fly and Sunday 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 $1,157 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,741 and $1,707 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 SAUDIA ($410) and Turkish Airlines ($531), and the lowest round-trip tickets were found on SAUDIA ($745) and Turkish Airlines ($951).

Good to know

Low season

September

High season

December

Cheapest flight

$410
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 26% 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 $410 for a one-way ticket and $745 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Washington, D.C. and Bangkok, with oneworld 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 $1,387 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 $1,320 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 1150 reviews
8.6Boarding
8.2Entertainment
8.8Crew
8.1Food
8.3Comfort
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

Food was good, but it can be better if it add a little bit of oriental flavour, service is great too.

excellent, the food was excellent and delicious, and the crew were very helpful and accommodating. thank you very much

Older 777 - showing lots of wear - Premium econo seats that are difficult to recline and worn springs to they don't return to takeoff position without standing and pulling them forward

Excellent. All the ticket prices have gone up so much. With only economy as the option, I thought I better pay for a good airline and I am glad I took ANA. The only thing is the long layover at Hanaeda enroute to Singapore. Any chance to bring back the service to land at Narita instead for the transit and a shorter layover will be fantastic. I am a fan of ANA.

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

The space for the seats i like it. Its not too close like other air line. The food is ok and also the staff. I'm waiting for my flight rewards point because until now i didn't recieved it.

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

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Besides the flight cancellation, everything else was prefect. Kudos to Malaysian Airlines.

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.

Overnight flight in the old style Business class, but still very good.

I was in business class, without the business class amenities. Large seat with lots of legroom, but no TV or bed. Food was okay, but I did enjoy the Turkish red wine.

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

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.
8/31Sat
1 stopSAUDIA
31h 35mIAD-BKK
$410
8/31Sat
3 stops
30h 45mIAD-BKK
$438
8/12Mon
1 stopTurkish Airlines
26h 25mIAD-BKK
$531
9/10Tue
1 stopTurkish Airlines
25h 30mIAD-BKK
$568
8/7Wed
1 stopQatar Airways
21h 30mIAD-BKK
$653
8/7Wed
2 stopsDelta
29h 30mBWI-BKK
$700
7/21Sun
2 stopsKorean Air
24h 46mBWI-BKK
$749
8/4Sun
2 stopsKorean Air
27h 40mBWI-BKK
$769
10/14Mon
1 stopQatar Airways
21h 30mIAD-BKK
$776
6/30Sun
2 stopsDelta
30h 35mBWI-BKK
$1,120

Search by stops

Search by airline

Search by price

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.
6/3Mon
multi-stopTurkish Airlines
26h 25mIAD-BKK
6/20Thu
multi-stopTurkish Airlines
42h 05mBKK-IAD
$1,221
6/2Sun
multi-stopTurkish Airlines
21h 15mIAD-BKK
6/28Fri
multi-stopTurkish Airlines
42h 05mBKK-IAD
$1,249
6/4Tue
multi-stopQatar Airways
29h 05mIAD-BKK
10/15Tue
multi-stopQatar Airways
30h 05mBKK-IAD
$1,452
6/1Sat
multi-stopQatar Airways
23h 00mIAD-BKK
6/12Wed
multi-stopQatar Airways
31h 10mBKK-IAD
$1,509
6/3Mon
multi-stopEmirates
38h 35mIAD-BKK
6/23Sun
multi-stopEmirates
40h 10mBKK-IAD
$1,772
6/2Sun
multi-stopEmirates
21h 20mIAD-BKK
6/20Thu
multi-stopEmirates
40h 10mBKK-IAD
$1,853
5/31Fri
multi-stopKorean Air
30h 35mBWI-BKK
6/3Mon
multi-stopKorean Air
36h 26mBKK-BWI
$2,034
6/3Mon
multi-stopANA
46h 05mBWI-BKK
6/10Mon
multi-stopANA
34h 57mBKK-BWI
$2,103
6/4Tue
multi-stopKorean Air
41h 45mBWI-BKK
10/15Tue
multi-stopKorean Air
25h 55mBKK-BWI
$2,107
5/31Fri
multi-stopANA
30h 44mBWI-BKK
6/9Sun
multi-stopANA
34h 57mBKK-BWI
$2,133

Search by stops

Search by airline

Search by price

Flights to Bangkok

Destination:

Bangkok (BKK)Thailand

Return flight deals:

Bangkok - Washington, D.C.

Cabin classes: