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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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Jul 25 — Aug 11
Sat 7/25
Sat 8/1
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 June 25, 2026.

This United Airlines deal was found by Cheapflights users on 6/24. 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.
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 6/24$937
This United Airlines deal was found by Cheapflights users on 6/24. 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 9/307:00 am
BKK
-
IAD
2 stops35h 19m
United Airlines
Sun 10/48:20 am
IAD
-
BKK
2 stops33h 15m
United Airlines
Deal found 6/24$938
This Ovago deal was found by Cheapflights users on 6/24. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/264:55 pm
BKK
-
IAD
1 stop26h 14m
ANA
Thu 2/48:15 am
IAD
-
BKK
2 stops28h 05m
ANA
Deal found 6/24$946
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Tue 8/257:00 am
BKK
-
IAD
2 stops35h 00m
United Airlines
Fri 8/2810:41 pm
IAD
-
BKK
2 stops38h 14m
United Airlines
Deal found 6/24$948
This United Airlines deal was found by Cheapflights users on 6/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:00 am
BKK
-
IAD
2 stops27h 19m
United Airlines
Tue 7/712:50 pm
IAD
-
BKK
1 stop28h 45m
United Airlines
Deal found 6/22$958
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Fri 7/37:00 am
BKK
-
IAD
2 stops25h 00m
United Airlines
Sat 7/253:15 pm
IAD
-
BKK
2 stops31h 20m
United Airlines
Deal found 6/24$959
This United Airlines deal was found by Cheapflights users on 6/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:00 am
BKK
-
IAD
2 stops27h 19m
United Airlines
Wed 7/291:10 pm
IAD
-
BKK
2 stops33h 25m
United Airlines
Deal found 6/22$962
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Thu 8/277:00 am
BKK
-
DCA
2 stops26h 13m
United Airlines
Tue 9/294:24 pm
DCA
-
BKK
3 stops30h 11m
United Airlines
Deal found 6/24$963
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Thu 8/277:00 am
BKK
-
IAD
2 stops23h 23m
United Airlines
Tue 9/2912:58 pm
IAD
-
BKK
2 stops33h 37m
United Airlines
Deal found 6/24$963
This KAYAK deal was found by Cheapflights users on 6/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am
BKK
-
DCA
2 stops25h 59m
ANA
Sun 10/258:30 am
DCA
-
BKK
2 stops33h 40m
ANA
Deal found 6/21$1,011
This Delta deal was found by Cheapflights users on 6/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:50 am
BKK
-
DCA
2 stops25h 06m
Delta
Sun 8/26:00 am
DCA
-
BKK
2 stops28h 45m
Delta
Deal found 6/24$1,085
This United Airlines deal was found by Cheapflights users on 6/23. 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 6/243:45 pm
BKK
-
DCA
3 stops33h 37m
United Airlines
Tue 7/76:00 am
DCA
-
BKK
2 stops29h 15m
United Airlines
Deal found 6/23$1,099

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 June 25, 2026.

Round-trip from

$937
(United Airlines)

One-way from

$614
(Orbitz)

Popular in

April

Cheapest in

October

Average price

$987
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 ($248 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 June 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 June 25, 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

Wed 9/30

7:00 am-7:19 am

2 stops35h 19m

Washington, D.C. Dulles Intl

Sun 10/4

8:20 am-4:35 am

2 stops33h 15m

$938

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 9/10

7:00 am-9:59 pm

2 stops25h 59m

Washington, D.C. Reagan-National

Sun 9/13

1:04 pm-9:35 am

3 stops33h 31m

$946
Quickest round-trip

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 12/6

12:55 am-9:50 am

1 stop20h 55m

Washington, D.C. Dulles Intl

Thu 1/7

11:50 am-11:20 pm

1 stop23h 30m

$1,058

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 10/20

9:40 pm-11:05 am

1 stop24h 25m

Washington, D.C. Dulles Intl

Sun 10/25

12:50 pm-12:45 am

1 stop24h 55m

$1,065

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 9/21

7:00 am-5:25 am

2 stops33h 25m

Washington, D.C. Dulles Intl

Tue 10/20

12:15 pm-4:35 am

1 stop29h 20m

$1,115

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 10/20

3:45 pm-11:59 am

3 stops31h 14m

Washington, D.C. Reagan-National

Sun 10/25

8:30 am-5:10 am

2 stops33h 40m

$1,126

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 11/26

9:40 am-11:18 pm

2 stops25h 38m

Washington, D.C. Reagan-National

Thu 2/4

7:00 am-11:20 pm

2 stops28h 20m

$1,148

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 12/19

11:15 pm-9:50 am

1 stop22h 35m

Washington, D.C. Dulles Intl

Thu 1/7

7:15 am-11:20 pm

2 stops28h 05m

$1,154

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 10/20

3:45 pm-11:55 am

3 stops31h 10m

Washington, D.C. Dulles Intl

Sun 10/25

10:10 pm-12:20 am

2 stops39h 10m

$1,171

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 7/28

2:35 am-12:08 am

2 stops32h 33m

Washington, D.C. Dulles Intl

Thu 8/27

1:30 pm-11:35 pm

1 stop23h 05m

$1,185

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

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 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 June 25, 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
1,218 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

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
1,218 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

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
7.8
Good
8,438 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

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
9,886 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

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, Korean Air, and Delta can get you from Thailand to Washington, D.C. in just under 20h 55m. Your travel time can differ by up to 14h 24m. 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 $483 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 Suvarnabhumi - Baltimore/Washington 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, 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
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Falls Church
Laurel
Fredericksburg
Hanover
Manassas
Waldorf
Silver Spring
Largo
Clinton
Hunt Valley

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 June 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$972Average$1,112FlexibilityNo 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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