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Washington, D.C.

$614+ 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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Jun 26 — Jul 31
Fri 6/26
Fri 7/3
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 May 27, 2026.

This United Airlines deal was found by Cheapflights users on 5/25. 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 6/157:00 am
BKK
-
IAD
2 stops25h 00m
United Airlines
Thu 8/69:10 am
IAD
-
BKK
2 stops37h 25m
United Airlines
Deal found 5/25$966
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/81:30 am
BKK
-
IAD
1 stop29h 00m
Multiple Airlines
Sun 8/93:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/27$972
This United Airlines deal was found by Cheapflights users on 5/23. 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 9/99:35 am
BKK
-
DCA
2 stops58h 20m
United Airlines
Wed 10/216:00 am
DCA
-
BKK
2 stops35h 35m
United Airlines
Deal found 5/23$974
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Tue 6/239:35 am
BKK
-
IAD
2 stops48h 44m
United Airlines
Fri 7/2410:20 pm
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 5/23$975
This United Airlines deal was found by Cheapflights users on 5/25. 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
-
IAD
2 stops46h 53m
United Airlines
Sun 9/203:15 pm
IAD
-
BKK
2 stops31h 20m
United Airlines
Deal found 5/25$977
This United Airlines deal was found by Cheapflights users on 5/24. 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 11/19:10 am
BKK
-
IAD
2 stops25h 50m
United Airlines
Wed 11/410:08 am
IAD
-
BKK
2 stops50h 12m
United Airlines
Deal found 5/24$978
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Mon 9/287:00 am
BKK
-
IAD
2 stops26h 59m
United Airlines
Wed 9/303:35 pm
IAD
-
BKK
2 stops31h 00m
United Airlines
Deal found 5/26$979
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Tue 10/203:45 pm
BKK
-
DCA
3 stops31h 38m
United Airlines
Sun 10/256:00 am
DCA
-
BKK
2 stops36h 10m
United Airlines
Deal found 5/23$985
This United Airlines deal was found by Cheapflights users on 5/24. 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 9/93:45 pm
BKK
-
IAD
3 stops30h 41m
United Airlines
Wed 9/301:03 pm
IAD
-
BKK
2 stops33h 32m
United Airlines
Deal found 5/24$986
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Mon 6/157:00 am
BKK
-
IAD
2 stops27h 19m
United Airlines
Fri 8/710:20 pm
IAD
-
BKK
2 stops48h 15m
United Airlines
Deal found 5/26$988
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/81:30 am
BKK
-
IAD
1 stop29h 00m
Multiple Airlines
Thu 8/63:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/27$992
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Tue 9/13:45 pm
BKK
-
IAD
3 stops30h 41m
United Airlines
Fri 10/29:45 am
IAD
-
BKK
2 stops36h 50m
United Airlines
Deal found 5/26$996

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 May 27, 2026.

Round-trip from

$966
(United Airlines)

One-way from

$614
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$1,277
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. 17% potential increase in price ($251 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($65 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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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 May 27, 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

Tue 9/1

3:45 pm-11:26 am

3 stops30h 41m

Washington, D.C. Dulles Intl

Fri 10/2

9:45 am-9:35 am

2 stops36h 50m

$996

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 10/31

9:10 am-8:43 pm

2 stops22h 33m

Washington, D.C. Reagan-National

Wed 11/4

11:30 am-12:20 am

3 stops48h 50m

$1,109

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 6/18

9:35 am-3:50 pm

1 stop41h 15m

Washington, D.C. Dulles Intl

Wed 8/5

3:15 pm-9:35 am

2 stops31h 20m

$1,199

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 6/18

9:35 am-3:50 pm

1 stop41h 15m

Washington, D.C. Dulles Intl

Sat 8/8

1:10 pm-9:35 am

2 stops33h 25m

$1,199

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 6/14

9:40 pm-12:25 am

2 stops37h 45m

Washington, D.C. Dulles Intl

Tue 8/4

6:49 pm-11:35 pm

2 stops41h 46m

$1,200

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Wed 6/10

9:00 am-7:40 pm

2 stops45h 40m

Baltimore/Washington

Wed 9/9

7:25 pm-5:45 pm

2 stops35h 20m

$1,201

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 6/11

2:35 am-11:44 pm

2 stops32h 09m

Washington, D.C. Reagan-National

Thu 8/6

9:39 am-1:05 am

2 stops28h 26m

$1,201

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 6/10

2:35 am-11:44 pm

2 stops32h 09m

Washington, D.C. Reagan-National

Sat 8/8

6:05 am-11:35 pm

2 stops30h 30m

$1,201

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 6/9

2:35 am-8:48 pm

2 stops29h 13m

Washington, D.C. Reagan-National

Wed 9/9

10:00 am-9:45 pm

2 stops24h 45m

$1,208

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 6/17

7:00 am-9:53 pm

2 stops25h 53m

Washington, D.C. Reagan-National

Wed 8/5

11:57 am-9:35 am

3 stops34h 38m

$1,208

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/23

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, April is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of $472). Flying from Thailand 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 far ahead should I book a flight from Thailand to Washington, D.C.?

Booking 17 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 May 27, 2026.
Read through reviews of airlines operating flights from Thailand to Washington, D.C., such as Korean Air,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,217 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

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
1,217 reviews
Korean Air
8.4
Very good
1,217 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

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!!
Delta
7.9
Good
8,426 reviews
Korean Air
8.4
Very good
1,217 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

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
9,751 reviews
Korean Air
8.4
Very good
1,217 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Overall

8.4

Comfort

8.3

Food

8.1

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, Delta, and Korean Air can get you from Thailand to Washington, D.C. in just under 26h 26m. Your travel time can differ by up to 11h 19m. The distance from Thailand to Washington, D.C. is about 8774 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. IndiGo flights start at $471 while deals on AIR PREMIA start at $483 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 Suvarnabhumi - Washington, D.C. Reagan-National and Bangkok Suvarnabhumi - Baltimore/Washington.

  • 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, April is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of $472). Flying from Thailand 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
Tysons
Owings Mills
Springfield
Arlington
Reston
Herndon
Fredericksburg
Rockville
Hyattsville
Manassas
Hanover
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Hunt Valley
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.

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 May 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$1,028Average$1,365FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,044Average$1,137FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,065Average$1,172FlexibilityNo 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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