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Washington, D.C.

$617+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Jun 15 — Jun 221
Mon 6/15
Mon 6/22
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 16, 2026.

This Trip.com deal was found by Cheapflights users on 5/14. 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.
Tue 6/3010:45 pm
BKK
-
IAD
1 stop23h 05m
Multiple Airlines
Tue 10/133:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/14$1,115
This Qatar Airways deal was found by Cheapflights users on 5/13. 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.
Sun 9/62:30 am
BKK
-
IAD
1 stop24h 10m
Qatar Airways
Sat 10/39:00 pm
IAD
-
BKK
1 stop22h 20m
Qatar Airways
Deal found 5/13$1,122
This Trip.com deal was found by Cheapflights users on 5/12. 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 5/2810:45 pm
BKK
-
IAD
1 stop23h 05m
Multiple Airlines
Thu 7/23:10 pm
IAD
-
BKK
1 stop21h 40m
Multiple Airlines
Deal found 5/12$1,126
This CheapOair deal was found by Cheapflights users on 5/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:10 pm
BKK
-
BWI
2 stops59h 30m
Multiple Airlines
Sun 10/259:35 pm
BWI
-
BKK
2 stops46h 10m
Multiple Airlines
Deal found 5/16$1,128
This ANA deal was found by Cheapflights users on 5/13. 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 9/99:35 pm
BKK
-
IAD
1 stop23h 30m
ANA
Tue 11/31:05 pm
IAD
-
BKK
2 stops28h 05m
ANA
Deal found 5/13$1,133
This FlightHub deal was found by Cheapflights users on 5/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Thu 9/33:10 pm
IAD
-
BKK
1 stop40h 00m
Etihad Airways
Deal found 5/12$1,135
This United Airlines deal was found by Cheapflights users on 5/13. 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 10/109:35 am
BKK
-
IAD
2 stops30h 55m
United Airlines
Thu 10/228:30 am
IAD
-
BKK
2 stops28h 25m
United Airlines
Deal found 5/13$1,137
This United Airlines deal was found by Cheapflights users on 5/15. 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 6/289:35 am
BKK
-
IAD
2 stops48h 44m
United Airlines
Fri 7/310:21 pm
IAD
-
BKK
2 stops38h 34m
United Airlines
Deal found 5/15$1,138
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Thu 7/239:15 am
BKK
-
IAD
1 stop35h 30m
Etihad Airways
Fri 8/143:10 pm
IAD
-
BKK
1 stop21h 40m
Etihad Airways
Deal found 5/12$1,140
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Thu 6/411:40 pm
BKK
-
IAD
1 stop25h 55m
Multiple Airlines
Wed 6/1010:20 pm
IAD
-
BKK
1 stop28h 40m
Multiple Airlines
Deal found 5/15$1,142
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 6/157:00 pm
BKK
-
IAD
1 stop24h 45m
Qatar Airways
Tue 6/3011:05 am
IAD
-
BKK
1 stop21h 20m
Qatar Airways
Deal found 5/16$1,143
This Gotogate deal was found by Cheapflights users on 5/13. 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.
Sat 9/53:15 am
BKK
-
IAD
1 stop41h 30m
Etihad Airways
Tue 10/63:10 pm
IAD
-
BKK
1 stop41h 30m
Etihad Airways
Deal found 5/13$1,144

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 16, 2026.

Round-trip from

$1,115
(Trip.com)

One-way from

$617
(oojo)

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 ($253 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($66 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 16, 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
Quickest round-trip

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 6/13

2:30 am-6:20 pm

1 stop26h 50m

Washington, D.C. Dulles Intl

Tue 6/30

11:05 am-7:25 pm

1 stop21h 20m

$1,145

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Wed 6/10

9:50 am-11:26 pm

2 stops24h 36m

Washington, D.C. Reagan-National

Wed 9/9

6:00 am-9:45 pm

2 stops28h 45m

$1,207

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 5/27

9:50 am-11:39 pm

2 stops24h 49m

Washington, D.C. Dulles Intl

Thu 9/3

7:10 am-11:35 pm

2 stops29h 25m

$1,207

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 5/29

7:00 am-12:45 am

2 stops28h 45m

Washington, D.C. Dulles Intl

Sat 9/5

6:15 am-4:35 am

2 stops35h 20m

$1,219

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Mon 6/8

11:35 am-8:06 pm

2 stops43h 31m

Washington, D.C. Reagan-National

Mon 7/20

6:59 pm-10:25 am

2 stops52h 26m

$1,278

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

6:00 am-4:20 pm

2 stops47h 20m

$1,285

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Sat 6/27

7:00 am-7:22 am

2 stops35h 22m

Washington, D.C. Dulles Intl

Sat 7/4

8:35 am-9:35 am

2 stops38h 00m

$1,300

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 8/28

2:30 am-3:40 pm

1 stop24h 10m

Washington, D.C. Dulles Intl

Sat 10/31

8:05 pm-12:15 pm

1 stop29h 10m

$1,301

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 6/8

3:45 pm-9:24 am

3 stops28h 39m

Washington, D.C. Dulles Intl

Wed 7/22

3:56 pm-9:35 am

3 stops30h 39m

$1,302

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 6/1

7:00 pm-6:20 pm

1 stop34h 20m

Washington, D.C. Dulles Intl

Mon 6/29

9:00 pm-7:15 am

1 stop23h 15m

$1,310

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

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 16 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 16, 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
1,217 reviews

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

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

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

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!!
Delta
7.9
Good
8,455 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

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
7.4
Good
3,725 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

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
9,726 reviews
Korean Air
8.4
Very good
1,217 reviews

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

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 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.?

    Delta, United Airlines, and Japan Airlines can get you from Thailand to Washington, D.C. in just under 24h 36m. Your travel time can differ by up to 19h 51m. The distance from Thailand to Washington, D.C. is about 8797 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 - 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
Tysons
Owings Mills
Springfield
Arlington
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Silver Spring
Hanover
Laurel
Woodbridge
Waldorf
Largo
Clinton
Hunt Valley
Cordova
Reston

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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,044Average$1,137FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,065Average$1,172FlexibilityNo cancel feeOn-time81%
ANACheapest$1,109Average$1,365FlexibilityNo cancel feeOn-time80%
DeltaCheapest$1,112Average$1,119FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,142Average$1,177FlexibilityNo cancel feeOn-time68%

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