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Washington, D.C.

$625+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
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 2, 2026.

This Qatar Airways deal was found by Cheapflights users on 4/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:45 pm
BKK
-
IAD
1 stop33h 35m
Qatar Airways
Wed 9/99:00 pm
IAD
-
BKK
1 stop28h 55m
Qatar Airways
Deal found 4/28$1,098
This United Airlines deal was found by Cheapflights users on 5/1. 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
-
IAD
3 stops33h 18m
United Airlines
Wed 1/206:30 am
IAD
-
BKK
2 stops34h 40m
United Airlines
Deal found 5/1$1,110
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 10/294:55 pm
BKK
-
DCA
3 stops27h 20m
United Airlines
Sun 11/111:30 am
DCA
-
BKK
3 stops35h 55m
United Airlines
Deal found 4/28$1,114
This ANA deal was found by Cheapflights users on 4/30. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:55 pm
BKK
-
IAD
1 stop31h 10m
ANA
Wed 9/93:40 pm
IAD
-
BKK
2 stops27h 15m
ANA
Deal found 4/30$1,121
This SmartFares deal was found by Cheapflights users on 4/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:25 pm
BKK
-
IAD
2 stops30h 09m
Multiple Airlines
Tue 5/269:00 am
IAD
-
BKK
2 stops38h 25m
Multiple Airlines
Deal found 4/29$1,126
This Qatar Airways deal was found by Cheapflights users on 4/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:40 pm
BKK
-
IAD
1 stop33h 40m
Qatar Airways
Wed 5/69:00 pm
IAD
-
BKK
1 stop29h 45m
Qatar Airways
Deal found 4/28$1,137
This Qatar Airways deal was found by Cheapflights users on 4/27. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:40 pm
BKK
-
IAD
1 stop33h 40m
Qatar Airways
Thu 6/119:00 pm
IAD
-
BKK
1 stop29h 45m
Qatar Airways
Deal found 4/27$1,149
This Qatar Airways deal was found by Cheapflights users on 4/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:40 pm
BKK
-
IAD
1 stop33h 40m
Qatar Airways
Thu 9/311:05 am
IAD
-
BKK
1 stop21h 20m
Qatar Airways
Deal found 4/28$1,151
This SAUDIA deal was found by Cheapflights users on 4/27. 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 SAUDIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:50 am
BKK
-
IAD
1 stop24h 50m
SAUDIA
Fri 6/126:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 4/27$1,153
This flugladen.de deal was found by Cheapflights users on 4/29. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:40 pm
BKK
-
IAD
1 stop33h 40m
Qatar Airways
Fri 5/299:00 pm
IAD
-
BKK
1 stop29h 45m
Qatar Airways
Deal found 4/29$1,154
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/13:45 pm
BKK
-
IAD
3 stops36h 45m
United Airlines
Fri 5/86:33 pm
IAD
-
BKK
2 stops28h 02m
United Airlines
Deal found 4/30$1,156
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 7/79:35 am
BKK
-
IAD
2 stops31h 06m
United Airlines
Tue 9/296:20 am
IAD
-
BKK
2 stops35h 15m
United Airlines
Deal found 4/30$1,157

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 2, 2026.

Round-trip from

$1,098
(Qatar Airways)

One-way from

$625
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$1,285
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. 16% potential increase in price ($245 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
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 May 2, 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 - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 10/29

4:55 pm-2:56 pm

3 stops57h 01m

Washington, D.C. Reagan-National

Sun 11/1

7:00 am-5:10 am

2 stops34h 10m

$1,126

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 5/18

1:35 am-8:06 pm

2 stops29h 31m

Washington, D.C. Reagan-National

Tue 5/26

8:00 am-10:25 am

2 stops39h 25m

$1,175

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 5/13

2:30 am-6:20 pm

1 stop26h 50m

Washington, D.C. Dulles Intl

Thu 6/11

9:00 pm-1:45 pm

1 stop29h 45m

$1,198

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 5/14

7:40 pm-6:20 pm

1 stop33h 40m

Washington, D.C. Dulles Intl

Sun 6/14

9:00 pm-7:25 pm

1 stop35h 25m

$1,201

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sun 6/7

7:00 pm-6:20 pm

1 stop34h 20m

Washington, D.C. Dulles Intl

Sat 6/13

9:00 pm-1:45 pm

1 stop29h 45m

$1,202

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 10/22

5:20 pm-7:28 am

2 stops49h 08m

Washington, D.C. Dulles Intl

Sun 10/25

5:38 pm-3:55 pm

2 stops35h 17m

$1,203

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 5/26

7:40 pm-6:20 pm

1 stop33h 40m

Washington, D.C. Dulles Intl

Fri 5/29

9:00 pm-1:45 pm

1 stop29h 45m

$1,218

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Tue 5/26

5:20 pm-7:34 am

2 stops49h 14m

Washington, D.C. Dulles Intl

Tue 6/2

5:35 pm-4:20 pm

2 stops35h 45m

$1,274

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Tue 5/12

6:40 pm-6:20 pm

2 stops34h 40m

Washington, D.C. Dulles Intl

Thu 6/11

9:00 pm-1:45 pm

1 stop29h 45m

$1,294

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Mon 6/1

5:30 pm-6:28 am

2 stops23h 58m

Baltimore/Washington

Fri 8/28

8:30 pm-12:10 pm

2 stops28h 40m

$1,358

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

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.

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

Booking 35 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.

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.

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 2, 2026.
Read through reviews of airlines operating flights from Thailand to Washington, D.C., such as Korean Air,Delta, 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
1,216 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Crew

8.7

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
1,216 reviews
Korean Air
8.4
Very good
1,216 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Crew

8.7

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
8,460 reviews
Korean Air
8.4
Very good
1,216 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Crew

8.7

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!!
Qatar Airways
7.4
Good
3,723 reviews
Korean Air
8.4
Very good
1,216 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Crew

8.7

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
9,682 reviews
Korean Air
8.4
Very good
1,216 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Crew

8.7

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.?

    Qatar Airways, United Airlines, and ANA can get you from Thailand to Washington, D.C. in just under 31h 10m. Your travel time can differ by up to 2h 25m. 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. 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
Silver Spring
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Woodbridge
Hanover
Laurel
Largo
Upper Marlboro
Waldorf
Clinton
Hunt Valley
Cordova

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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$1,028Average$1,340FlexibilityNo 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$1,134Average$1,171FlexibilityNo cancel feeOn-time68%

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