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Cheap flights from Thailand to Washington, D.C. from ฿21,002

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — WAS
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Washington, D.C.

Enter your travel dates to find the best prices.

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 25 July 2026.

Thu 17/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 20/918:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 20/7฿27,981
Tue 22/915:25
BKK
-
IAD
1 stop35h 20m
ซาอุเดียแอร์ไลน์
Sun 18/1018:50
IAD
-
BKK
1 stop31h 55m
ซาอุเดียแอร์ไลน์
Deal found 22/7฿32,498
Mon 7/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 14/906:13
IAD
-
BKK
2 stops35h 22m
United Airlines
Deal found 24/7฿34,150
Wed 12/809:35
BKK
-
IAD
1 stop41h 15m
United Airlines
Thu 20/815:40
IAD
-
BKK
2 stops25h 55m
United Airlines
Deal found 23/7฿34,184
Tue 20/1009:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Sun 25/1006:11
IAD
-
BKK
2 stops35h 59m
United Airlines
Deal found 24/7฿34,251
Mon 5/1009:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Mon 19/1006:10
IAD
-
BKK
2 stops29h 05m
United Airlines
Deal found 23/7฿34,285
Mon 21/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Tue 9/308:35
IAD
-
BKK
2 stops32h 35m
United Airlines
Deal found 21/7฿34,319
Thu 17/909:35
BKK
-
IAD
1 stop35h 30m
United Airlines
Sun 20/917:15
IAD
-
BKK
3 stops29h 20m
United Airlines
Deal found 20/7฿34,352
Mon 7/907:00
BKK
-
DCA
2 stops26h 13m
United Airlines
Mon 14/913:04
DCA
-
BKK
2 stops28h 31m
United Airlines
Deal found 23/7฿34,420
Sat 12/907:00
BKK
-
DCA
2 stops26h 30m
United Airlines
Sat 26/913:15
DCA
-
BKK
3 stops33h 20m
United Airlines
Deal found 20/7฿34,453
Mon 7/909:35
BKK
-
DCA
2 stops47h 55m
United Airlines
Mon 21/911:57
DCA
-
BKK
3 stops34h 38m
United Airlines
Deal found 21/7฿34,487
Mon 5/1007:00
BKK
-
DCA
2 stops25h 05m
United Airlines
Mon 19/1007:46
DCA
-
BKK
2 stops27h 29m
United Airlines
Deal found 23/7฿34,521

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 25 July 2026.

Round-trip from

฿27,981

One-way from

฿21,002

Popular in

April

Cheapest in

October

Average price

฿45,140
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 17/9-20/9
  • 2 total stops
  • 67h 15m total
  • Thailand to Washington, D.C.
Search Deals
17/9
  • 17/9
  • 3 total stops
  • 43h 10m total
  • Thailand to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (฿182,542 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿63,386 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 17,341 searches. Data last updated 25 July 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 return flight

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 17/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 20/9

13:10-09:35

3 stops33h 25m

฿34,319

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Mon 21/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Tue 9/3

08:35-05:10

2 stops32h 35m

฿34,319

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Sat 12/9

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Sat 26/9

13:15-09:35

3 stops33h 20m

฿34,453

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 19/11

09:10-16:18

2 stops43h 08m

Washington, D.C. Dulles Intl

Mon 23/11

17:56-11:30

2 stops29h 34m

฿34,453

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 19/11

07:10-10:59

2 stops39h 49m

Washington, D.C. Reagan-National

Mon 23/11

17:00-05:10

2 stops48h 10m

฿34,487

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 17/9

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Sun 20/9

15:30-09:35

3 stops31h 05m

฿34,555

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 20/11

07:10-11:46

2 stops40h 36m

Washington, D.C. Dulles Intl

Mon 23/11

06:40-11:30

2 stops40h 50m

฿35,802

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 7/9

07:00-22:30

2 stops26h 30m

Washington, D.C. Reagan-National

Mon 21/9

09:30-04:35

2 stops32h 05m

฿35,937

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 20/10

21:35-20:00

2 stops33h 25m

Washington, D.C. Reagan-National

Sun 25/10

12:55-05:30

2 stops53h 35m

฿36,240

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 20/10

15:45-18:09

1 stop37h 24m

Washington, D.C. Reagan-National

Sun 25/10

10:30-05:10

2 stops31h 40m

฿36,645

Flights are sorted by cheapest return flights first.

Deals found on 23/7

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 return 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, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of ฿35,094). Flying from Thailand to Washington, D.C. in August is currently the most expensive (average of ฿43,084). 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.?

To ensure you get the cheapest price possible for a flight from Thailand to Washington, D.C., you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 25 July 2026.
Get a feel of what it's like to fly with เดลต้า from Thailand to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
เดลต้า
7.8
Good
8,486 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
เดลต้า
7.8
Good
8,486 reviews
เดลต้า
7.8
Good
8,486 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

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.?

    Departing from Thailand to Washington, D.C. will take you 31h 30m. Airlines will cover a distance of 14124 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Thailand to Washington, D.C.?

    The most popular route from Thailand to Washington, D.C. is Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl. You may also consider Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl or 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 holiday 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, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of ฿35,094). Flying from Thailand to Washington, D.C. in August is currently the most expensive (average of ฿43,084). 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

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.

Alternative routes for Thailand to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Reagan-National flights
Chiang Mai to Dulles Intl flights

Top 4 airlines flying from Thailand to Washington, D.C.

Discover the top 4 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 17,341 searches. Data last updated 25 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest฿27,582Average฿35,588FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
เอทิฮัดแอร์เวย์Cheapest฿33,628Average฿34,034FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
Korean AirCheapest฿33,991Average฿37,154FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Qatar AirwaysCheapest฿37,893Average฿42,247FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Thailand to Washington, D.C.?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Thailand to Washington, D.C.. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Washington, D.C.?

Cheapflights simply makes it quick and affordable to book flights from Thailand to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Thailand to Washington, D.C. with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Thailand to Washington, D.C., users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Thailand to Washington, D.C. become cheaper?

Yes! Start tracking prices for Thailand to Washington, D.C. flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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