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

Departing from Thailand to Washington, D.C. will take you 25h 05m. Airlines will cover a distance of 14149 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 Don Mueang Intl - Washington, D.C. Dulles Intl 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: Korean Air, United Airlines or เอทิฮัดแอร์เวย์.

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.

฿13,928+ 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 30 October 2026.

Sat 19/1215:20 -

1 stop35h 25m

Fri 8/117:50 -

1 stop31h 50m

Deal found 28/10฿28,294

Sat 19/1215:20 -

1 stop35h 25m

Fri 15/117:50 -

1 stop31h 50m

Deal found 26/10฿29,171

Tue 10/1119:55 -

1 stop25h 05m

Wed 25/1118:20 -

2 stops25h 50m

Deal found 25/10฿32,105

Tue 10/1122:55 -

1 stop33h 40m

Wed 25/1123:35 -

1 stop33h 50m

Deal found 25/10฿32,611

Sat 19/1220:50 -

1 stop24h 10m

Fri 15/114:25 -

1 stop21h 15m

Deal found 28/10฿34,364

Tue 3/1102:25 -

1 stop42h 35m

Wed 18/1114:25 -

1 stop21h 15m

Deal found 27/10฿34,938

Mon 2/1123:05 -

1 stop31h 25m

Fri 6/1122:00 -

1 stop35h 50m

Deal found 25/10฿35,039

Wed 28/1009:10 -

2 stops39h 25m

Fri 30/1022:10 -

2 stops50h 20m

Deal found 27/10฿35,073

Tue 10/1109:10 -

2 stops38h 42m

Wed 25/1122:10 -

2 stops49h 20m

Deal found 25/10฿35,106

Tue 3/1109:10 -

1 stop35h 50m

Fri 6/1123:35 -

1 stop36h 00m

Deal found 28/10฿35,747

Mon 2/1109:10 -

1 stop35h 50m

Fri 6/1123:55 -

2 stops47h 25m

Deal found 25/10฿40,334

Thu 5/1109:10 -

1 stop35h 50m

Mon 9/1114:25 -

2 stops31h 00m

Deal found 28/10฿49,169

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 30 October 2026.

Fri 2/419:10 -

2 stops46h 25m

Thu 22/409:05 -

2 stops45h 40m

Deal found 29/10฿33,150

Thu 12/1119:55 -

1 stop25h 05m

Mon 16/1114:25 -

1 stop28h 10m

Deal found 26/10฿36,320

Thu 12/1107:10 -

2 stops29h 20m

Mon 16/1120:01 -

2 stops51h 29m

Deal found 29/10฿39,221

Mon 8/317:50 -

2 stops34h 36m

Mon 9/819:01 -

2 stops30h 09m

Deal found 29/10฿39,389

Mon 18/119:45 -

2 stops30h 25m

Mon 25/118:10 -

2 stops36h 50m

Deal found 27/10฿40,300

Sat 19/1205:55 -

1 stop25h 30m

Sat 9/121:20 -

1 stop23h 30m

Deal found 26/10฿44,616

Mon 18/100:20 -

2 stops35h 30m

Mon 1/211:50 -

1 stop22h 55m

Deal found 28/10฿45,898

Sat 19/1207:55 -

2 stops33h 50m

Fri 8/117:30 -

2 stops42h 05m

Deal found 28/10฿46,202

Mon 18/100:20 -

1 stop21h 30m

Mon 1/211:50 -

1 stop22h 55m

Deal found 28/10฿58,376

Wed 23/1220:50 -

1 stop24h 10m

Sat 9/114:25 -

1 stop21h 15m

Deal found 26/10฿40,435

Tue 19/119:45 -

3 stops31h 55m

Mon 1/222:15 -

3 stops32h 45m

Deal found 28/10฿44,482

Fri 5/200:20 -

2 stops28h 24m

Wed 10/210:56 -

2 stops47h 49m

Deal found 28/10฿47,179

Mon 18/123:05 -

1 stop31h 25m

Mon 25/123:55 -

2 stops26h 45m

Deal found 27/10฿48,292

Wed 3/210:10 -

2 stops40h 00m

Mon 8/222:15 -

3 stops32h 45m

Deal found 28/10฿44,684

Sat 19/1220:50 -

1 stop24h 10m

Mon 11/114:25 -

2 stops40h 00m

Deal found 28/10฿45,156

Sun 17/100:20 -

2 stops35h 30m

Mon 25/111:50 -

1 stop22h 55m

Deal found 28/10฿56,622

Wed 9/1200:20 -

1 stop21h 30m

Thu 17/1207:00 -

2 stops27h 45m

Deal found 26/10฿66,132

Last-minute flights from Thailand to Washington, D.C.
Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 30 October 2026 and is based on user searches.

Thu 29/1007:10 -

2 stops28h 20m

Fri 30/1022:10 -

2 stops50h 20m

Deal found 27/10฿35,140

Mon 2/1123:05 -

1 stop31h 25m

Fri 6/1122:00 -

1 stop35h 50m

Deal found 25/10฿35,039

Mon 2/1109:10 -

1 stop35h 50m

Fri 6/1123:55 -

2 stops47h 25m

Deal found 25/10฿40,334

Tue 3/1102:25 -

1 stop42h 35m

Wed 18/1114:25 -

1 stop21h 15m

Deal found 27/10฿34,938

Tue 3/1109:10 -

1 stop35h 50m

Fri 6/1123:35 -

1 stop36h 00m

Deal found 28/10฿35,747

Thu 5/1109:10 -

1 stop35h 50m

Mon 9/1114:25 -

2 stops31h 00m

Deal found 28/10฿49,169

Tue 10/1119:55 -

1 stop25h 05m

Wed 25/1118:20 -

2 stops25h 50m

Deal found 25/10฿32,105

Tue 10/1122:55 -

1 stop33h 40m

Wed 25/1123:35 -

1 stop33h 50m

Deal found 25/10฿32,611

Tue 10/1109:10 -

2 stops38h 42m

Wed 25/1122:10 -

2 stops49h 20m

Deal found 25/10฿35,106

Tue 10/1119:55 -

1 stop25h 05m

Wed 11/1114:25 -

1 stop21h 15m

Deal found 29/10฿35,376

Thu 12/1119:55 -

1 stop25h 05m

Mon 16/1114:25 -

1 stop28h 10m

Deal found 26/10฿36,320

Thu 26/1122:55 -

1 stop33h 40m

Thu 3/1211:10 -

1 stop30h 00m

Deal found 29/10฿35,949

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

Round-trip from	฿26,372
One-way from	฿13,928
Popular in	April
Cheapest in	January
Average price	฿28,935

AIR PREMIA
4/3-24/3
2 total stops
67h 30m total
Thailand to Washington, D.C.

Search Deals

เอทิฮัดแอร์เวย์
23/3-31/12
1 total stop
24h 05m total
Thailand to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (฿323,718 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (฿70,512 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 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

Fastest return journey

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Tue 23/3

20:55-10:00

1 stop24h 05m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿13,928

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Thu 10/12

20:40-18:30

2 stops33h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿19,155

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Wed 9/12

21:30-18:30

2 stops57h 00m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿19,324

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 15/12

22:55-19:31

3 stops56h 36m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿19,728

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sat 5/12

23:55-16:15

2 stops52h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,010

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sat 13/3

14:05-05:31

2 stops27h 26m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿22,291

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 1/12

19:10-07:25

2 stops48h 15m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿22,966

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Tue 8/12

17:15-11:11

3 stops29h 56m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿23,337

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Wed 23/12

10:20-11:45

1 stop37h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿23,674

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 22/1

15:20-13:50

1 stop34h 30m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿23,843

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 34 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.

BKK-IAD

CNX-IAD

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

BKK-IAD

CNX-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 ฿35,545). Flying from Thailand to Washington, D.C. in December is currently the most expensive (average of ฿42,290). 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 89 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.

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 25h 05m. Airlines will cover a distance of 14149 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 - 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 ฿35,545). Flying from Thailand to Washington, D.C. in December is currently the most expensive (average of ฿42,290). 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

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Complete your trip

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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 5 airlines flying from Thailand to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest฿27,293	Average฿35,307	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
เอทิฮัดแอร์เวย์	Cheapest฿31,178	Average฿34,038	FlexibilityNo cancel fee	On-time75%	Search เอทิฮัดแอร์เวย์ flights
Korean Air	Cheapest฿34,102	Average฿39,389	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights
ANA	Cheapest฿35,555	Average฿40,970	FlexibilityNo cancel fee	On-time80%	Search ANA flights
Qatar Airways	Cheapest฿36,780	Average฿41,762	FlexibilityNo cancel fee	On-time68%	Search Qatar Airways 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 ฿13,928

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/3. 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Thailand to Washington, D.C.Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 30 October 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 30 October 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 30 October 2026.

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

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Popular in

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Cheapflights Fare Finder

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.?

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 89 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.

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 30 October 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 5 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 30 October 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 30 October 2026.

Last-minute flights from Thailand to Washington, D.C.
Discover last-minute flight deals from Thailand to Washington, D.C.. Data last updated 30 October 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 30 October 2026.