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

United Airlines, เอทิฮัดแอร์เวย์, and เดลต้า can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 35h 21m. Your travel time can differ by up to 34m. Thailand and Washington, D.C. Dulles Intl Airport are separated by 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. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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. Dulles Intl Airport?

While some choose either Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl or Chiang Mai - Washington, D.C. Dulles Intl, Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl is the most popular route from Thailand to Washington, D.C. Dulles Intl Airport.

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

Consider United Airlines, เอทิฮัดแอร์เวย์ or Korean Air when booking your flight. These represent the most popular airlines when flying from Thailand to Washington, D.C. Dulles Intl Airport.

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

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. Dulles Intl Airport as you normally would.

Can I find deals for flights from Thailand to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Thailand to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Thailand to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Dulles Intl.

Can I find deals for business class flights from Thailand to Dulles Intl?

Yes. Cheapflights offers flight deals from Thailand to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

฿12,856+ Cheap Flights from Thailand to Washington, D.C. Dulles Intl Airport

Cheap flight deals from Thailand to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Thailand to Dulles Intl
Explore the most affordable flight options available from Thailand to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Fri 4/908:15 -

1 stop24h 45m

Wed 16/901:15 -

1 stop28h 35m

Deal found 31/8฿25,082

Sat 19/1212:40 -

1 stop20h 15m

Fri 15/123:55 -

1 stop22h 55m

Deal found 29/8฿26,242

Sun 25/1015:20 -

1 stop35h 25m

Sun 29/1117:50 -

1 stop31h 50m

Deal found 30/8฿26,341

Mon 31/812:40 -

1 stop20h 50m

Sat 12/901:15 -

1 stop22h 25m

Deal found 30/8฿26,606

Mon 14/912:40 -

1 stop20h 20m

Sat 10/1001:15 -

1 stop22h 25m

Deal found 31/8฿26,938

Tue 22/915:25 -

1 stop35h 20m

Sat 7/1117:50 -

1 stop31h 50m

Deal found 30/8฿26,971

Wed 30/912:40 -

1 stop20h 20m

Sat 31/1000:55 -

1 stop22h 55m

Deal found 29/8฿27,170

Wed 30/912:40 -

1 stop20h 20m

Mon 2/1123:55 -

1 stop28h 55m

Deal found 29/8฿27,203

Fri 25/1212:40 -

1 stop20h 15m

Sat 9/123:55 -

1 stop33h 50m

Deal found 28/8฿27,236

Wed 9/1209:10 -

1 stop35h 55m

Fri 8/112:30 -

2 stops46h 25m

Deal found 31/8฿30,218

Sat 5/908:00 -

2 stops25h 00m

Wed 16/901:15 -

2 stops47h 05m

Deal found 30/8฿32,769

Wed 9/1209:10 -

1 stop35h 55m

Fri 8/114:35 -

1 stop27h 30m

Deal found 31/8฿34,393

Best flights from Thailand to Dulles Intl
Discover carefully curated flight deals from Thailand to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Sun 20/909:35 -

1 stop35h 30m

Thu 24/908:20 -

2 stops33h 15m

Deal found 28/8฿33,995

Thu 5/1109:10 -

1 stop35h 55m

Wed 11/1120:05 -

2 stops34h 45m

Deal found 27/8฿34,790

Thu 5/1109:10 -

1 stop35h 55m

Mon 9/1114:35 -

1 stop27h 30m

Deal found 29/8฿35,221

Tue 8/1200:15 -

2 stops35h 21m

Sun 10/106:10 -

2 stops28h 45m

Deal found 29/8฿38,236

Thu 15/1017:20 -

2 stops47h 20m

Sun 15/1117:17 -

2 stops34h 43m

Deal found 31/8฿40,920

Thu 5/1119:45 -

3 stops31h 55m

Wed 11/1118:00 -

2 stops37h 00m

Deal found 27/8฿44,598

Thu 5/1119:45 -

2 stops56h 10m

Mon 9/1120:05 -

2 stops49h 20m

Deal found 29/8฿45,890

Mon 28/912:10 -

1 stop31h 40m

Mon 5/1010:55 -

1 stop22h 50m

Deal found 31/8฿48,673

Mon 4/100:55 -

2 stops32h 17m

Sun 17/111:50 -

1 stop37h 35m

Deal found 31/8฿54,704

Sun 4/1009:35 -

2 stops32h 26m

Mon 26/1015:37 -

3 stops32h 53m

Deal found 31/8฿34,061

Sun 20/909:35 -

1 stop35h 30m

Sun 8/1110:15 -

2 stops30h 55m

Deal found 28/8฿34,194

Wed 4/1100:15 -

2 stops35h 20m

Wed 11/1106:00 -

2 stops28h 55m

Deal found 27/8฿38,534

Mon 12/1015:45 -

3 stops35h 16m

Mon 19/1017:45 -

2 stops28h 50m

Deal found 28/8฿34,691

Thu 24/1221:30 -

1 stop24h 20m

Sat 2/106:00 -

2 stops29h 20m

Deal found 30/8฿41,417

Fri 25/1216:55 -

3 stops29h 07m

Sat 9/117:55 -

2 stops42h 25m

Deal found 28/8฿34,790

Mon 21/913:00 -

2 stops31h 45m

Wed 23/915:10 -

2 stops38h 40m

Deal found 26/8฿48,375

Wed 30/923:50 -

1 stop43h 50m

Mon 2/1110:30 -

1 stop21h 40m

Deal found 29/8฿48,872

Tue 5/120:10 -

2 stops31h 45m

Wed 20/120:05 -

1 stop22h 35m

Deal found 31/8฿54,637

Tue 20/1012:10 -

1 stop31h 30m

Sun 29/1110:30 -

1 stop33h 25m

Deal found 31/8฿50,993

Sat 19/1223:00 -

1 stop45h 10m

Fri 15/110:30 -

1 stop21h 40m

Deal found 28/8฿56,460

Thu 26/1111:10 -

1 stop33h 00m

Sun 20/1210:30 -

1 stop21h 40m

Deal found 30/8฿56,990

Fri 25/1223:00 -

1 stop45h 10m

Sat 9/110:30 -

1 stop35h 35m

Deal found 28/8฿53,146

Thu 26/1111:10 -

1 stop33h 00m

Tue 15/1210:30 -

1 stop35h 35m

Deal found 30/8฿56,990

Mon 21/912:10 -

1 stop31h 40m

Sat 24/1016:02 -

2 stops41h 08m

Deal found 27/8฿55,963

Thu 26/1116:55 -

3 stops41h 30m

Sun 20/1222:45 -

2 stops42h 25m

Deal found 30/8฿51,423

Sat 26/912:10 -

1 stop31h 40m

Sat 3/1016:02 -

2 stops32h 08m

Deal found 29/8฿56,327

Wed 6/109:10 -

2 stops24h 02m

Thu 21/107:00 -

2 stops40h 30m

Deal found 31/8฿55,532

Thu 26/1123:00 -

1 stop45h 10m

Fri 18/1210:30 -

1 stop33h 25m

Deal found 30/8฿57,653

Thu 26/1109:30 -

1 stop34h 40m

Fri 18/1210:30 -

2 stops42h 05m

Deal found 30/8฿59,442

Sun 3/109:30 -

1 stop34h 40m

Wed 20/110:30 -

1 stop20h 10m

Deal found 31/8฿60,535

Find flight deals from Thailand to Dulles Intl

Round-trip from	฿25,082
One-way from	฿12,856
Popular in	August
Cheapest in	October
Average price	฿69,912

Thai Airways
4/9-16/9
2 total stops
53h 20m total
Thailand to Washington, D.C.

Search Deals

เอทิฮัดแอร์เวย์
31/10
1 total stop
35h 55m total
Thailand to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (฿253,104 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (฿86,980 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 20/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Thu 24/9

08:20-04:35

2 stops33h 15m

฿33,995

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 4/10

09:35-07:01

2 stops32h 26m

Washington, D.C. Dulles Intl

Mon 26/10

15:37-11:30

3 stops32h 53m

฿34,061

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 20/9

09:35-10:05

1 stop35h 30m

Washington, D.C. Dulles Intl

Sun 8/11

10:15-05:10

2 stops30h 55m

฿34,194

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Mon 12/10

15:45-16:01

3 stops35h 16m

Washington, D.C. Dulles Intl

Mon 19/10

17:45-09:35

2 stops28h 50m

฿34,691

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Thu 5/11

09:10-09:05

1 stop35h 55m

Washington, D.C. Dulles Intl

Wed 11/11

20:05-18:50

2 stops34h 45m

฿34,790

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 25/12

16:55-10:02

3 stops29h 07m

Washington, D.C. Dulles Intl

Sat 9/1

17:55-00:20

2 stops42h 25m

฿34,790

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Thu 5/11

09:10-09:05

1 stop35h 55m

Washington, D.C. Dulles Intl

Mon 9/11

14:35-06:05

1 stop27h 30m

฿35,221

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Tue 8/12

00:15-23:36

2 stops35h 21m

Washington, D.C. Dulles Intl

Sun 10/1

06:10-22:55

2 stops28h 45m

฿38,236

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Wed 4/11

00:15-23:35

2 stops35h 20m

Washington, D.C. Dulles Intl

Wed 11/11

06:00-22:55

2 stops28h 55m

฿38,534

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Thu 15/10

17:20-05:40

2 stops47h 20m

Washington, D.C. Dulles Intl

Sun 15/11

17:17-16:00

2 stops34h 43m

฿40,920

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Thailand to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Thailand with our price prediction graph.

BKK-IAD

CNX-IAD

DMK-IAD

UTP-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. Dulles Intl Airport

TH0-IAD

BKK-IAD

CNX-IAD

DMK-IAD

UTP-IAD

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

Currently, July is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿34,923). Flying from Thailand to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of ฿45,261). 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 Dulles Intl

Check out reviews from past customers who have flown with Korean Air,United Airlines, andเอทิฮัดแอร์เวย์ from Thailand to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very Good

1,219 reviews

Check prices

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

1,219 reviews

Korean Air

8.4

Very Good

1,219 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

United Airlines

7.4

Good

10,148 reviews

Korean Air

8.4

Very Good

1,219 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

เอทิฮัดแอร์เวย์

7.3

Good

1,529 reviews

Korean Air

8.4

Very Good

1,219 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Related info for your journey

How long is the flight from Thailand to Washington, D.C. Dulles Intl Airport?
United Airlines, เอทิฮัดแอร์เวย์, and เดลต้า can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 35h 21m. Your travel time can differ by up to 34m. Thailand and Washington, D.C. Dulles Intl Airport are separated by 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. Dulles Intl Airport?
While some choose either Bangkok Don Mueang Intl - Washington, D.C. Dulles Intl or Chiang Mai - Washington, D.C. Dulles Intl, Bangkok Suvarnabhumi - Washington, D.C. Dulles Intl is the most popular route from Thailand to Washington, D.C. Dulles Intl Airport.
Can I find deals for flights from Thailand to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Thailand to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Thailand to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Dulles Intl.
Can I find deals for business class flights from Thailand to Dulles Intl?
Yes. Cheapflights offers flight deals from Thailand to Dulles Intl 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. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿34,923). Flying from Thailand to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of ฿45,261). 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

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Popular flights

Alternative routes for Thailand to Dulles Intl

Chiang Mai to Reagan-National flights

Chiang Mai to Dulles Intl flights

Chiang Mai to Baltimore flights

Top 3 airlines flying from Thailand to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest฿26,815	Average฿34,689	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
เอทิฮัดแอร์เวย์	Cheapest฿33,051	Average฿33,450	FlexibilityNo cancel fee	On-time75%	Search เอทิฮัดแอร์เวย์ flights
Korean Air	Cheapest฿33,408	Average฿37,298	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights

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How does Cheapflights help users find flights from Thailand to Dulles Intl?

When you search for this flight from Thailand to Dulles Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Dulles Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Thailand.

Can Cheapflights find flights from Thailand to Dulles Intl with no change fees?

Yes, we can. To see specific flights from Thailand to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿12,856

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Thailand to Dulles Intl

Cheapest flights from Thailand to Dulles IntlExplore the most affordable flight options available from Thailand to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Explore the most affordable flight options available from Thailand to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from Thailand to Dulles IntlDiscover carefully curated flight deals from Thailand to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from Thailand to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from Thailand to Dulles IntlDiscover last-minute flight deals from Thailand to Dulles Intl. Data last updated 31 August 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Dulles Intl. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Thailand to Dulles IntlSearch for one-way flight options from Thailand to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Search for one-way flight options from Thailand to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Find flight deals from Thailand to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Thailand to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Thailand with our price prediction graph.

Cheapflights Insights

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

Reviews of airlines servicing Dulles Intl

Related info for your journey

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

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

Can I find deals for flights from Thailand to Dulles Intl that include hotel bookings?

How can I find direct flights from Thailand to Dulles Intl?

Can I find deals for business class flights from Thailand to Dulles Intl?

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

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 Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Thailand to Dulles Intl by cabin class

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

Thailand and Dulles Intl flights

Browse other Thailand and Dulles Intl flight options. Last updated on 31 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 3 airlines flying from Thailand to Dulles Intl

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How does Cheapflights help users find flights from Thailand to Dulles Intl?

Why should you use Cheapflights to find cheap flight tickets from Thailand to Dulles Intl?

Can Cheapflights find flights from Thailand to Dulles Intl with no change fees?

Can Cheapflights notify me if prices for flights from Thailand to Dulles Intl become cheaper?

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Cheapest flights from Thailand to Dulles Intl
Explore the most affordable flight options available from Thailand to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from Thailand to Dulles Intl
Discover carefully curated flight deals from Thailand to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from Thailand to Dulles Intl
Discover last-minute flight deals from Thailand to Dulles Intl. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Thailand to Dulles Intl
Search for one-way flight options from Thailand to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.