How long is the flight from Thailand to Washington, D.C.?

Departing from Thailand to Washington, D.C. will take you 21h 30m. Airlines will cover a distance of 13576 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 Suvarnabhumi - Washington, D.C. Reagan-National or Bangkok Suvarnabhumi - Baltimore/Washington.

What are the most popular airlines that fly from Thailand to Washington, D.C.?

Before booking your flight from Thailand to Washington, D.C., check out the most popular airlines for this route: United Airlines, เอทิฮัดแอร์เวย์ or Korean Air.

What is the cheapest time of day to fly from TH to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Thailand to Washington, D.C. as you normally would.

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.

฿12,255+ Cheap Flights from Thailand to Washington, D.C.

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

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 7 September 2026.

Sun 4/1015:25 -

1 stop35h 20m

Sun 11/1018:50 -

1 stop31h 55m

Deal found 3/9฿24,610

Fri 4/912:40 -

1 stop20h 20m

Wed 16/901:15 -

1 stop22h 25m

Deal found 3/9฿26,384

Sat 26/912:40 -

1 stop20h 20m

Fri 2/1001:15 -

1 stop22h 25m

Deal found 6/9฿26,449

Sat 19/1212:40 -

1 stop20h 15m

Fri 15/123:55 -

1 stop22h 55m

Deal found 4/9฿26,614

Wed 28/1015:20 -

1 stop34h 30m

Sat 31/1018:50 -

1 stop41h 40m

Deal found 3/9฿26,647

Sat 5/908:15 -

1 stop24h 45m

Fri 18/901:15 -

1 stop33h 20m

Deal found 4/9฿26,877

Thu 1/1017:15 -

1 stop39h 45m

Wed 7/1001:15 -

1 stop33h 20m

Deal found 3/9฿27,238

Mon 5/1012:40 -

1 stop20h 20m

Sat 24/1001:15 -

1 stop22h 35m

Deal found 3/9฿27,304

Fri 4/917:15 -

1 stop39h 45m

Mon 7/901:15 -

1 stop33h 20m

Deal found 2/9฿27,369

Mon 19/1008:15 -

1 stop24h 45m

Sat 24/1001:15 -

1 stop22h 35m

Deal found 5/9฿27,402

Mon 7/908:00 -

2 stops25h 00m

Wed 16/901:15 -

2 stops43h 10m

Deal found 2/9฿32,167

Sat 3/1006:35 -

2 stops26h 25m

Fri 9/1001:15 -

2 stops47h 05m

Deal found 4/9฿32,659

Best flights from Thailand to Washington, D.C.
Discover carefully curated flight deals from Thailand to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Thu 5/1109:10 -

2 stops25h 20m

Sun 8/1113:06 -

2 stops28h 04m

Deal found 2/9฿33,711

Mon 21/921:00 -

1 stop23h 45m

Sun 27/915:10 -

1 stop21h 45m

Deal found 6/9฿33,974

Mon 19/1021:40 -

2 stops29h 59m

Mon 26/1006:05 -

2 stops28h 25m

Deal found 3/9฿38,015

Wed 4/1100:20 -

1 stop21h 30m

Sun 8/1111:50 -

1 stop22h 55m

Deal found 6/9฿38,081

Thu 1/1009:40 -

2 stops24h 30m

Thu 8/1007:45 -

2 stops28h 15m

Deal found 3/9฿38,508

Sun 27/923:40 -

1 stop25h 20m

Sat 3/1017:45 -

1 stop34h 05m

Deal found 6/9฿38,869

Thu 5/1117:00 -

2 stops48h 44m

Sun 8/1117:17 -

2 stops34h 43m

Deal found 6/9฿42,648

Thu 5/1119:45 -

2 stops56h 10m

Mon 9/1120:05 -

2 stops49h 20m

Deal found 2/9฿45,441

Tue 10/1107:55 -

2 stops45h 58m

Sat 14/1107:18 -

2 stops33h 47m

Deal found 3/9฿45,671

Sun 11/1012:10 -

1 stop31h 30m

Sun 18/1010:55 -

1 stop22h 50m

Deal found 6/9฿48,759

Sat 21/1123:05 -

1 stop30h 00m

Sat 28/1118:55 -

1 stop33h 10m

Deal found 4/9฿63,019

Sun 4/1009:35 -

2 stops46h 36m

Sun 11/1012:15 -

1 stop29h 20m

Deal found 2/9฿33,711

Thu 5/1109:10 -

1 stop35h 55m

Mon 9/1114:35 -

1 stop27h 30m

Deal found 2/9฿34,894

Fri 9/1007:55 -

2 stops32h 25m

Sun 18/1007:02 -

2 stops28h 58m

Deal found 6/9฿71,594

Sun 4/1009:35 -

1 stop35h 30m

Thu 12/1113:15 -

3 stops34h 15m

Deal found 4/9฿33,809

Wed 23/1201:05 -

2 stops27h 34m

Sat 2/106:00 -

2 stops30h 20m

Deal found 5/9฿38,081

Wed 18/1110:10 -

2 stops40h 00m

Mon 30/1118:00 -

2 stops37h 00m

Deal found 4/9฿39,001

Mon 2/1109:10 -

1 stop36h 00m

Sun 15/1110:15 -

3 stops37h 15m

Deal found 5/9฿33,875

Thu 24/1221:40 -

2 stops30h 01m

Sat 2/106:00 -

2 stops30h 20m

Deal found 5/9฿38,081

Thu 12/1109:10 -

2 stops49h 20m

Mon 16/1115:30 -

3 stops32h 00m

Deal found 6/9฿34,105

Sun 27/923:30 -

2 stops52h 19m

Sat 3/1016:45 -

2 stops43h 50m

Deal found 6/9฿38,146

Thu 5/1109:10 -

1 stop35h 55m

Sun 8/1114:35 -

2 stops64h 25m

Deal found 5/9฿42,648

Sat 26/912:10 -

1 stop31h 40m

Sat 3/1010:55 -

1 stop37h 15m

Deal found 6/9฿49,383

Mon 21/1207:10 -

2 stops29h 49m

Sun 10/110:15 -

3 stops37h 15m

Deal found 6/9฿34,171

Fri 8/111:50 -

2 stops44h 10m

Tue 11/509:30 -

2 stops61h 55m

Deal found 7/9฿50,435

Wed 4/1100:20 -

2 stops23h 06m

Mon 9/1106:00 -

2 stops28h 45m

Deal found 2/9฿51,453

Sat 10/1012:10 -

1 stop31h 30m

Sun 18/1010:55 -

1 stop22h 50m

Deal found 6/9฿49,383

Sat 10/1021:40 -

2 stops27h 33m

Sat 17/1018:26 -

2 stops43h 39m

Deal found 6/9฿41,662

Fri 8/111:50 -

2 stops44h 10m

Mon 10/518:59 -

2 stops28h 26m

Deal found 7/9฿50,533

Mon 21/907:00 -

2 stops25h 20m

Tue 13/1012:15 -

1 stop29h 20m

Deal found 3/9฿35,354

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

Round-trip from	฿24,610
One-way from	฿12,255
Popular in	April
Cheapest in	October
Average price	฿37,851

ซาอุเดียแอร์ไลน์
4/10-11/10
2 total stops
67h 15m total
Thailand to Washington, D.C.

Search Deals

เอทิฮัดแอร์เวย์
6/11-31/12
1 total stop
35h 55m total
Thailand to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (฿258,458 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (฿68,760 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

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

Chiang MaiWashington, D.C.

CNX Chiang Mai - IAD Washington, D.C. Dulles Intl

CNXIAD

Chiang Mai

Fri 6/11

06:35-20:55

2 stops50h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿20,010

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Mon 23/11

08:25-10:29

2 stops38h 04m

Washington, D.C. Reagan-National

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,554

BangkokBaltimore

BKK Bangkok Suvarnabhumi - BWI Baltimore/Washington

BKKBWI

Bangkok Suvarnabhumi

Wed 25/11

10:55-05:45

2 stops30h 50m

Baltimore/Washington

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,554

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Tue 1/12

19:15-18:57

2 stops35h 42m

Washington, D.C. Reagan-National

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,652

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 29/10

19:15-22:57

2 stops38h 42m

Washington, D.C. Reagan-National

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,652

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Tue 29/9

20:15-23:10

2 stops37h 55m

Washington, D.C. Reagan-National

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,718

BangkokBaltimore

BKK Bangkok Suvarnabhumi - BWI Baltimore/Washington

BKKBWI

Bangkok Suvarnabhumi

Fri 13/11

10:55-22:55

2 stops24h 00m

Baltimore/Washington

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,751

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - DCA Washington, D.C. Reagan-National

BKKDCA

Bangkok Suvarnabhumi

Thu 26/11

17:50-16:04

2 stops34h 14m

Washington, D.C. Reagan-National

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,882

BangkokWashington, D.C.

BKK Bangkok Suvarnabhumi - IAD Washington, D.C. Dulles Intl

BKKIAD

Bangkok Suvarnabhumi

Sun 13/12

17:50-16:26

2 stops34h 36m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,981

Chiang MaiWashington, D.C.

CNX Chiang Mai - IAD Washington, D.C. Dulles Intl

CNXIAD

Chiang Mai

Sat 10/10

17:20-05:40

2 stops47h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿23,755

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

CNX-IAD

BKK-DCA

BKK-IAD

DMK-IAD

BKK-BWI

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.

TH0-WAS

CNX-IAD

BKK-DCA

BKK-IAD

DMK-IAD

What is the cheapest month to book a flight from Thailand to Washington, D.C.?

Currently, July is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of ฿34,631). Flying from Thailand to Washington, D.C. in December is currently the most expensive (average of ฿40,939). 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.

Related info for your journey

How long is the flight from Thailand to Washington, D.C.?
Departing from Thailand to Washington, D.C. will take you 21h 30m. Airlines will cover a distance of 13576 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 Suvarnabhumi - Washington, D.C. Reagan-National or 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 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, July is the cheapest month in which you can book a flight from Thailand to Washington, D.C. (average of ฿34,631). Flying from Thailand to Washington, D.C. in December is currently the most expensive (average of ฿40,939). 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

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Popular flights

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Alternative routes for Thailand to Washington, D.C.

Chiang Mai to Dulles Intl flights

Chiang Mai to Reagan-National flights

Top 3 airlines flying from Thailand to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest฿26,591	Average฿34,399	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
เอทิฮัดแอร์เวย์	Cheapest฿32,775	Average฿33,170	FlexibilityNo cancel fee	On-time75%	Search เอทิฮัดแอร์เวย์ flights
Korean Air	Cheapest฿33,129	Average฿36,986	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights

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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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Cheap flights from Thailand to Washington, D.C. from ฿12,255

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 7 September 2026.

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 7 September 2026.

Best flights from Thailand to Washington, D.C.Discover carefully curated flight deals from Thailand to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Discover carefully curated flight deals from Thailand to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Last-minute flights from Thailand to Washington, D.C.Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Thailand to Washington, D.C.Search for one-way flight options from Thailand to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Search for one-way flight options from Thailand to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

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

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Popular in

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Use the filters below to find and compare flights from Thailand to Washington, D.C. that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from Thailand to Washington, D.C.?

Related info for your journey

How long is the flight from Thailand to Washington, D.C.?

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

Can I find deals for flights from Thailand to Washington, D.C. that include hotel bookings?

How can I find direct flights from Thailand to Washington, D.C.?

Can I find deals for business class flights from Thailand to Washington, D.C.?

What is the cheapest month to book a flight from Thailand to Washington, D.C.?

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.

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Thailand to Washington, D.C. by cabin class

Find flights from Thailand to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Thailand and Washington, D.C. flights

Browse other Thailand and Washington, D.C. flight options. Last updated on 7 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Thailand to Washington, D.C. flights

Consider these flights travelling from Thailand to Washington, D.C..

Top 3 airlines flying from Thailand to Washington, D.C.

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

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

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

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

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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 7 September 2026.

Best flights from Thailand to Washington, D.C.
Discover carefully curated flight deals from Thailand to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Last-minute flights from Thailand to Washington, D.C.
Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Thailand to Washington, D.C.
Search for one-way flight options from Thailand to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.