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Washington, D.C.

$611+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
Jul 11 — Jul 181
Sa 7/11
Sa 7/18
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 Juni 11, 2026.

This Gotogate deal was found by Cheapflights users on 6/9. 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.
So 9/203:25 pm
BKK
-
IAD
1 stop35h 20m
SAUDIA
So 9/276:50 pm
IAD
-
BKK
1 stop31h 55m
SAUDIA
Deal found 6/9$907
This United Airlines deal was found by Cheapflights users on 6/9. 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.
So 9/203:45 pm
BKK
-
IAD
3 stops38h 38m
United Airlines
So 9/2710:13 pm
IAD
-
BKK
2 stops48h 22m
United Airlines
Deal found 6/9$908
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mi 6/179:35 am
BKK
-
IAD
1 stop35h 30m
United Airlines
Mi 6/246:33 am
IAD
-
BKK
2 stops35h 02m
United Airlines
Deal found 6/10$931
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mi 6/179:35 am
BKK
-
DCA
2 stops46h 34m
United Airlines
Mi 6/246:00 am
DCA
-
BKK
2 stops35h 35m
United Airlines
Deal found 6/10$938
This United Airlines deal was found by Cheapflights users on 6/7. 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.
Di 6/99:35 am
BKK
-
IAD
1 stop41h 15m
United Airlines
Di 6/166:33 am
IAD
-
BKK
2 stops35h 02m
United Airlines
Deal found 6/7$938
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Mi 6/107:00 am
BKK
-
IAD
2 stops25h 00m
United Airlines
Mi 9/912:35 pm
IAD
-
BKK
1 stop29h 00m
United Airlines
Deal found 6/8$947
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Di 6/239:35 am
BKK
-
DCA
2 stops47h 18m
United Airlines
Mo 6/298:25 am
DCA
-
BKK
2 stops33h 10m
United Airlines
Deal found 6/10$950
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Di 6/239:35 am
BKK
-
IAD
2 stops61h 17m
United Airlines
So 7/56:33 am
IAD
-
BKK
2 stops35h 02m
United Airlines
Deal found 6/10$950
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Di 7/79:35 am
BKK
-
IAD
1 stop41h 15m
United Airlines
Mi 7/2210:29 pm
IAD
-
BKK
2 stops38h 26m
United Airlines
Deal found 6/8$953
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Do 6/259:35 am
BKK
-
DCA
2 stops46h 35m
United Airlines
Mi 7/153:10 pm
DCA
-
BKK
2 stops45h 45m
United Airlines
Deal found 6/8$954
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Di 7/79:35 am
BKK
-
DCA
2 stops47h 18m
United Airlines
Mi 7/2211:57 am
DCA
-
BKK
3 stops34h 38m
United Airlines
Deal found 6/8$956
This Ovago deal was found by Cheapflights users on 6/10. 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.
Mi 6/177:00 am
BKK
-
DCA
2 stops25h 53m
ANA
Mi 6/249:30 am
DCA
-
BKK
2 stops32h 05m
ANA
Deal found 6/10$999

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 Juni 11, 2026.

Round-trip from

$907
(Gotogate)

One-way from

$611
(China Airlines)

Popular in

April

Cheapest in

October

Average price

$1,090
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 ($256 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 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 Juni 11, 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

Di 9/15

9:35 am-7:19 am

2 stops56h 44m

Washington, D.C. Dulles Intl

Di 11/10

10:08 am-5:10 am

2 stops31h 02m

$955

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mi 7/8

7:00 am-11:19 pm

2 stops27h 19m

Washington, D.C. Dulles Intl

Mi 7/29

3:15 pm-9:35 am

2 stops31h 20m

$960

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fr 7/3

7:00 am-11:19 pm

2 stops27h 19m

Washington, D.C. Dulles Intl

Sa 7/25

5:48 pm-9:35 am

2 stops28h 47m

$963

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mo 9/14

3:45 pm-11:26 am

3 stops30h 41m

Washington, D.C. Dulles Intl

Mo 11/9

10:08 am-5:10 am

2 stops31h 02m

$964

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Do 9/24

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Mi 11/11

1:05 pm-11:25 am

3 stops34h 20m

$1,089

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Do 9/24

9:35 am-10:05 am

1 stop35h 30m

Washington, D.C. Dulles Intl

Di 11/10

1:05 pm-5:10 am

2 stops28h 05m

$1,090

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Di 7/7

7:00 am-9:10 pm

2 stops25h 10m

Washington, D.C. Reagan-National

Mo 7/27

11:57 am-9:35 am

3 stops34h 38m

$1,101

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mi 7/8

7:00 am-11:19 pm

2 stops27h 19m

Washington, D.C. Dulles Intl

Do 7/23

12:15 pm-4:35 am

1 stop29h 20m

$1,115

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Do 6/25

7:00 am-9:53 pm

2 stops25h 53m

Washington, D.C. Reagan-National

Mi 7/15

11:57 am-9:35 am

3 stops34h 38m

$1,116

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Fr 9/11

9:50 am-11:24 pm

2 stops24h 34m

Washington, D.C. Reagan-National

So 9/13

10:00 am-1:05 am

2 stops28h 05m

$1,124

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 Juni 11, 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

Food

8.1

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

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

Food

8.1

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

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
8,400 reviews
Korean Air
8.4
Very good
1,218 reviews

Food

8.1

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

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
9,804 reviews
Korean Air
8.4
Very good
1,218 reviews

Food

8.1

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

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 21h 35m. Your travel time can differ by up to 35h 09m. The distance from Thailand to Washington, D.C. is about 8436 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 Don Mueang Intl - Washington, D.C. Dulles Intl.

  • 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
Rockville
Herndon
Fredericksburg
Laurel
Hyattsville
Manassas
Hanover
Lanham
Falls Church
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 Juni 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$1,028Average$1,371FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,040Average$1,137FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,070Average$1,173FlexibilityNo 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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