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Washington, D.C.

$615+ Cheap flights from Bangkok to Washington, D.C. (WAS)

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Jul 31 — Aug 71
Fri 7/31
Fri 8/7
1 adult, Economy
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Cheap flight deals from Bangkok to Washington, D.C.

Cheapest flights from Bangkok to Washington, D.C.
Explore the most affordable flight options available from Bangkok to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.

This Trip.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Sat 11/76:10 pm
IAD
-
BKK
1 stop31h 30m
SAUDIA
Deal found 6/30$801
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Sat 10/2412:40 pm
IAD
-
BKK
3 stops35h 50m
United Airlines
Deal found 6/28$884
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:35 am
BKK
-
DCA
2 stops45h 34m
United Airlines
Sat 10/244:24 pm
DCA
-
BKK
3 stops32h 06m
United Airlines
Deal found 6/27$886
This Ovago deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:00 am
BKK
-
IAD
2 stops25h 11m
ANA
Wed 10/1410:13 pm
IAD
-
BKK
2 stops38h 42m
ANA
Deal found 6/30$934
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 9/216:15 am
IAD
-
BKK
2 stops29h 00m
United Airlines
Deal found 6/26$935
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:35 am
BKK
-
DCA
2 stops47h 24m
United Airlines
Sun 9/136:30 am
DCA
-
BKK
2 stops35h 05m
United Airlines
Deal found 6/26$937
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/57:00 am
BKK
-
IAD
2 stops27h 19m
United Airlines
Sun 7/1212:50 pm
IAD
-
BKK
1 stop28h 45m
United Airlines
Deal found 6/27$939
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:00 am
BKK
-
DCA
2 stops24h 09m
United Airlines
Mon 9/218:25 am
DCA
-
BKK
2 stops28h 30m
United Airlines
Deal found 6/26$942
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:00 am
BKK
-
IAD
2 stops35h 19m
United Airlines
Sun 10/48:20 am
IAD
-
BKK
2 stops33h 15m
United Airlines
Deal found 6/28$942
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:35 am
BKK
-
IAD
1 stop41h 15m
United Airlines
Thu 8/208:35 am
IAD
-
BKK
2 stops28h 20m
United Airlines
Deal found 6/30$945
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:35 am
BKK
-
DCA
2 stops47h 18m
United Airlines
Mon 7/2011:57 am
DCA
-
BKK
3 stops34h 38m
United Airlines
Deal found 6/30$947
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:35 am
BKK
-
IAD
2 stops48h 44m
United Airlines
Mon 7/201:10 pm
IAD
-
BKK
2 stops33h 25m
United Airlines
Deal found 6/30$947

Find flight deals from Bangkok to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Bangkok (TH1) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 1, 2026.

Round-trip from

$801
(Trip.com)

One-way from

$615
(KAYAK)

Popular in

April

Cheapest in

October

Average price

$1,085
From Bangkok to Washington, D.C. (WAS)
Search Deals
One-way flight from Bangkok to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($237 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Bangkok to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 1, 2026.
Use the filters below to find and compare flights from Bangkok to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 9/17

9:50 am-11:05 am

1 stop36h 15m

Washington, D.C. Dulles Intl

Mon 9/21

1:15 pm-1:05 am

1 stop24h 50m

$1,045

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 9/20

2:35 am-9:45 pm

2 stops30h 10m

Washington, D.C. Dulles Intl

Tue 10/20

6:12 pm-1:35 pm

2 stops32h 23m

$1,046

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 12/6

12:55 am-11:51 pm

2 stops34h 56m

Washington, D.C. Dulles Intl

Thu 1/7

7:15 am-11:20 pm

2 stops28h 05m

$1,046

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 9/17

9:50 am-12:40 am

2 stops25h 50m

Washington, D.C. Dulles Intl

Mon 9/21

7:00 am-9:45 pm

2 stops27h 45m

$1,050
Quickest round-trip

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 10/8

11:30 pm-11:05 am

1 stop22h 35m

Washington, D.C. Dulles Intl

Sun 1/10

11:50 am-11:20 pm

1 stop23h 30m

$1,051

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 10/20

9:50 am-11:45 pm

2 stops24h 55m

Washington, D.C. Reagan-National

Sun 10/25

7:59 am-9:30 pm

2 stops26h 31m

$1,057

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 7/18

11:30 pm-11:20 pm

2 stops34h 50m

Washington, D.C. Dulles Intl

Sat 8/8

2:54 pm-1:35 pm

2 stops35h 41m

$1,082

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 9/10

7:00 am-10:30 pm

2 stops26h 30m

Washington, D.C. Reagan-National

Sun 9/13

3:30 pm-9:35 am

3 stops31h 05m

$1,084

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 9/30

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 10/4

6:10 am-4:35 am

2 stops35h 25m

$1,084

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 7/20

9:50 am-10:46 am

2 stops35h 56m

Washington, D.C. Dulles Intl

Sat 8/8

6:00 am-1:05 am

2 stops32h 05m

$1,110

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Bangkok to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Bangkok 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 Bangkok to Washington, D.C.

What is the cheapest month to book a flight from Bangkok to Washington, D.C.?

Currently, April is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of $472). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of $1,129). 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.

How much does it cost to fly round-trip from Bangkok to Washington, D.C.?

How far ahead should I book a flight from Bangkok to Washington, D.C.?

The best time to book flights from Bangkok to Washington, D.C. is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated July 1, 2026.
Read through reviews of airlines operating flights from Bangkok to Washington, D.C., such as Korean Air,United Airlines, andQatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,220 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
9,913 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Qatar Airways
7.3
Good
3,738 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Bangkok to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Bangkok to Washington, D.C.?

    Departing from Bangkok to Washington, D.C. will take you 26h 30m. The distance from Bangkok to Washington, D.C. is about 8797 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Bangkok to Washington, D.C. round-trip?

    Cheapflights users have booked flights from Bangkok to Washington, D.C. round-trip from $958. Other airlines that can offer you cheap pricing are ANA, from $1,028, and Korean Air, from $1,070. United Airlines is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Bangkok to Washington, D.C. one-way?

    To fly one-way, consider booking your trip with Air China, which is currently one of the cheapest options available, starting at $423. AIR PREMIA flights start at $488 while deals on Turkish Airlines start at $539 one-way.

  • What are the most popular routes from Bangkok to Washington, D.C.?

    While some choose either Bangkok Suvarnabhumi - Washington, D.C. Reagan-National or Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl, Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl is the most popular route from Bangkok to Washington, D.C..

  • Can I find deals for flights from Bangkok to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Bangkok to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bangkok to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to Washington, D.C..

  • Can I find deals for business class flights from Bangkok to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Bangkok to Washington, D.C. 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 Bangkok to Washington, D.C.?

    Currently, April is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. (average of $472). Flying from Bangkok to Washington, D.C. in January is currently the most expensive (average of $1,129). 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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Falls Church
Fredericksburg
Hanover
Manassas
Silver Spring
Laurel
Clinton
Hunt Valley
Cordova
Woodbridge

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 Bangkok to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Dulles Intl flights

Top 5 airlines flying from Bangkok to Washington, D.C.

Discover the top 5 airlines that operate flights from Bangkok to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$958Average$1,101FlexibilityNo cancel feeOn-time69%
ANACheapest$1,028Average$1,340FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$1,070Average$1,221FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,112Average$1,119FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,142Average$1,177FlexibilityNo cancel feeOn-time68%

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