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Washington, D.C.

$622+ Cheap flights from Thailand 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Thailand to Washington, D.C.

Cheapest flights from Thailand to Washington, D.C.
Explore the most affordable flight options available from Thailand to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This Gotogate deal was found by Cheapflights users on 7/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Sun 9/206:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 7/20$830
This Gotogate deal was found by Cheapflights users on 7/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Fri 9/46:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 7/19$869
This Justfly.com deal was found by Cheapflights users on 7/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
Sun 10/186:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 7/22$964
This United Airlines deal was found by Cheapflights users on 7/23. 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 10/289:10 am
BKK
-
IAD
1 stop36h 00m
United Airlines
Sun 11/810:35 am
IAD
-
BKK
3 stops36h 55m
United Airlines
Deal found 7/23$1,014
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 9/129:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Sat 9/265:20 pm
IAD
-
BKK
3 stops29h 15m
United Airlines
Deal found 7/20$1,015
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 9/219:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 3/98:35 am
IAD
-
BKK
2 stops32h 35m
United Airlines
Deal found 7/21$1,018
This United Airlines deal was found by Cheapflights users on 7/20. 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
Sun 9/205:15 pm
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 7/20$1,019
This United Airlines deal was found by Cheapflights users on 7/20. 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 9/139:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Sat 9/2610:18 pm
IAD
-
BKK
2 stops43h 17m
United Airlines
Deal found 7/20$1,021
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 9/127:00 am
BKK
-
DCA
2 stops26h 30m
United Airlines
Sat 9/261:15 pm
DCA
-
BKK
3 stops33h 20m
United Airlines
Deal found 7/20$1,022
This United Airlines deal was found by Cheapflights users on 7/18. 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 11/197:10 am
BKK
-
IAD
2 stops34h 18m
United Airlines
Mon 11/2310:23 pm
IAD
-
BKK
2 stops42h 47m
United Airlines
Deal found 7/18$1,022
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 9/79:35 am
BKK
-
DCA
2 stops47h 55m
United Airlines
Mon 9/2111:57 am
DCA
-
BKK
3 stops34h 38m
United Airlines
Deal found 7/21$1,023
This United Airlines deal was found by Cheapflights users on 7/21. 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 stops26h 30m
United Airlines
Sun 9/203:30 pm
DCA
-
BKK
3 stops31h 05m
United Airlines
Deal found 7/21$1,025

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

Keep the following information in mind while searching for Thailand to Washington, D.C. flight deals. Data was last updated July 23, 2026.

Round-trip from

$830
(Gotogate)

One-way from

$622
(oojo)

Popular in

April

Cheapest in

October

Average price

$1,085
From Thailand to Washington, D.C. (WAS)
Search Deals
One-way flight from Thailand to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($194 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Thailand 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 23, 2026.
Use the filters below to find and compare flights from Thailand 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

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 9/20

1:10 pm-9:35 am

3 stops33h 25m

$1,018

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 9/21

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Tue 3/9

8:35 am-5:10 am

2 stops32h 35m

$1,018

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 9/12

7:00 am-10:30 pm

2 stops26h 30m

Washington, D.C. Reagan-National

Sat 9/26

1:15 pm-9:35 am

3 stops33h 20m

$1,022

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 9/8

9:35 am-9:20 pm

2 stops46h 45m

Washington, D.C. Dulles Intl

Tue 10/6

12:58 pm-11:55 pm

2 stops47h 57m

$1,024

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 9/17

7:00 am-10:30 pm

2 stops26h 30m

Washington, D.C. Reagan-National

Sun 9/20

3:30 pm-9:35 am

3 stops31h 05m

$1,025

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 11/19

7:10 am-8:43 pm

2 stops25h 33m

Washington, D.C. Reagan-National

Mon 11/23

12:57 pm-12:20 am

3 stops47h 23m

$1,028

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 11/20

7:10 am-12:30 am

2 stops29h 20m

Washington, D.C. Dulles Intl

Mon 11/23

11:10 am-5:10 am

1 stop30h 00m

$1,062

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 9/7

7:00 am-10:30 pm

2 stops26h 30m

Washington, D.C. Reagan-National

Mon 9/21

9:30 am-4:35 am

2 stops32h 05m

$1,066
Quickest round-trip

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 11/19

2:00 am-3:55 pm

1 stop25h 55m

Washington, D.C. Dulles Intl

Mon 11/23

8:05 pm-6:15 am

1 stop22h 10m

$1,167

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 8/10

1:35 am-8:00 pm

2 stops29h 25m

Washington, D.C. Reagan-National

Mon 8/17

9:59 am-11:30 pm

2 stops50h 31m

$1,168

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

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

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

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

Currently, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of $1,063). Flying from Thailand to Washington, D.C. in August is currently the most expensive (average of $1,298). 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 far ahead should I book a flight from Thailand to Washington, D.C.?

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Thailand to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 23, 2026.
Read through reviews of airlines operating flights from Thailand 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
1,221 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Crew

8.7

Entertainment

8.2

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
1,221 reviews
Korean Air
8.4
Very good
1,221 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Crew

8.7

Entertainment

8.2

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
10,022 reviews
Korean Air
8.4
Very good
1,221 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Crew

8.7

Entertainment

8.2

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
3,748 reviews
Korean Air
8.4
Very good
1,221 reviews

Comfort

8.3

Food

8.1

Boarding

8.5

Overall

8.4

Crew

8.7

Entertainment

8.2

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 Thailand 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 Thailand to Washington, D.C.?

    United Airlines, STARLUX Airlines, and SWISS can get you from Thailand to Washington, D.C. in just under 35h 30m. Your travel time can differ by up to 20h 15m. The distance from Thailand to Washington, D.C. is about 8792 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Thailand 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 Thailand to Washington, D.C.?

    The most popular flight routes from Thailand to Washington, D.C. are Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl, Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl and Bangkok Suvarnabhumi - Washington, D.C. Reagan-National.

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of $1,063). Flying from Thailand to Washington, D.C. in August is currently the most expensive (average of $1,298). 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
Tysons
Arlington
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Clinton
Hunt Valley
Cordova
Woodbridge
Largo

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.

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

Discover the top 5 airlines that operate flights from Thailand 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 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$958Average$1,101FlexibilityNo cancel feeOn-time69%
ANACheapest$1,028Average$1,340FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$1,045Average$1,221FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,112Average$1,119FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,142Average$1,179FlexibilityNo cancel feeOn-time68%

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