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

United Airlines, เอทิฮัดแอร์เวย์, and Emirates can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 35h 55m. Your travel time can differ by up to 9h 05m. 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.

฿12,694+ 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 26 August 2026.

Mon 2/1115:20 -

1 stop34h 30m

Fri 6/1117:50 -

1 stop31h 50m

Deal found 21/8฿24,864

Sun 13/917:15 -

1 stop39h 45m

Fri 25/901:15 -

1 stop33h 20m

Deal found 25/8฿26,860

Fri 28/808:15 -

1 stop25h 15m

Fri 11/901:15 -

1 stop22h 25m

Deal found 25/8฿27,024

Thu 1/1017:15 -

1 stop39h 45m

Fri 16/1001:15 -

1 stop28h 35m

Deal found 25/8฿27,220

Thu 1/1015:25 -

1 stop35h 20m

Sun 1/1117:50 -

1 stop31h 50m

Deal found 25/8฿27,612

Fri 4/912:40 -

1 stop20h 20m

Sat 24/1001:15 -

1 stop28h 35m

Deal found 25/8฿27,743

Sat 29/808:15 -

1 stop25h 15m

Fri 11/901:15 -

1 stop33h 20m

Deal found 25/8฿27,809

Sun 25/1015:20 -

1 stop35h 25m

Fri 30/1018:50 -

1 stop31h 50m

Deal found 25/8฿28,725

Sat 19/1215:20 -

1 stop35h 25m

Fri 15/117:50 -

1 stop31h 50m

Deal found 22/8฿28,790

Mon 2/1109:10 -

1 stop35h 55m

Fri 6/1114:35 -

1 stop27h 30m

Deal found 21/8฿33,992

Thu 5/1109:10 -

1 stop35h 55m

Wed 11/1114:35 -

1 stop27h 30m

Deal found 26/8฿34,025

Thu 5/1109:10 -

1 stop35h 55m

Wed 11/1120:05 -

2 stops34h 45m

Deal found 26/8฿34,352

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 26 August 2026.

Thu 1/1009:35 -

1 stop41h 00m

Sat 31/1013:17 -

3 stops35h 13m

Deal found 25/8฿33,927

Thu 5/1109:10 -

1 stop35h 55m

Wed 11/1114:35 -

1 stop27h 30m

Deal found 26/8฿34,025

Mon 2/1109:10 -

1 stop35h 55m

Fri 6/1110:30 -

2 stops23h 50m

Deal found 21/8฿36,904

Tue 6/1009:50 -

2 stops24h 45m

Tue 13/1006:00 -

2 stops28h 45m

Deal found 22/8฿38,311

Thu 5/1119:45 -

2 stops56h 10m

Mon 9/1120:05 -

2 stops25h 20m

Deal found 24/8฿44,789

Sun 25/1023:00 -

1 stop45h 00m

Fri 30/1011:15 -

1 stop21h 55m

Deal found 25/8฿48,747

Fri 11/907:00 -

2 stops28h 44m

Mon 14/913:00 -

2 stops33h 35m

Deal found 25/8฿34,090

Fri 11/915:55 -

1 stop28h 50m

Mon 14/915:10 -

1 stop21h 45m

Deal found 25/8฿34,548

Sun 25/1016:55 -

3 stops35h 29m

Fri 30/1022:10 -

2 stops50h 20m

Deal found 25/8฿34,417

Thu 5/1109:10 -

1 stop35h 55m

Mon 9/1114:35 -

1 stop27h 30m

Deal found 25/8฿35,235

Mon 21/1216:55 -

3 stops30h 59m

Tue 19/122:10 -

2 stops49h 20m

Deal found 21/8฿34,450

Sun 15/1109:10 -

1 stop35h 55m

Sun 22/1117:15 -

3 stops35h 10m

Deal found 25/8฿42,662

Tue 6/1015:45 -

3 stops33h 14m

Tue 13/1018:37 -

2 stops27h 58m

Deal found 22/8฿34,875

Fri 11/923:55 -

1 stop43h 55m

Mon 14/910:55 -

1 stop22h 50m

Deal found 25/8฿49,303

Wed 23/1216:55 -

3 stops35h 09m

Tue 5/108:25 -

2 stops39h 05m

Deal found 24/8฿34,941

Wed 23/1208:55 -

1 stop35h 15m

Tue 5/110:30 -

1 stop35h 35m

Deal found 24/8฿51,168

Wed 23/913:00 -

2 stops31h 45m

Tue 29/915:10 -

2 stops38h 40m

Deal found 26/8฿46,882

Sat 19/1211:10 -

1 stop33h 00m

Fri 15/110:30 -

1 stop33h 25m

Deal found 26/8฿55,977

Fri 9/1015:45 -

2 stops26h 36m

Fri 16/1009:45 -

2 stops36h 50m

Deal found 25/8฿38,900

Mon 21/913:00 -

2 stops31h 45m

Wed 23/915:10 -

2 stops38h 40m

Deal found 25/8฿47,831

Mon 14/923:55 -

1 stop43h 55m

Sun 11/1010:55 -

1 stop22h 50m

Deal found 26/8฿52,739

Tue 15/923:50 -

1 stop44h 00m

Sun 11/1010:55 -

1 stop37h 15m

Deal found 26/8฿52,739

Sun 13/913:30 -

1 stop30h 20m

Sun 11/1010:55 -

1 stop37h 15m

Deal found 26/8฿52,739

Thu 1/1023:50 -

2 stops34h 02m

Sat 31/1011:15 -

1 stop21h 55m

Deal found 25/8฿56,370

Wed 10/207:10 -

2 stops27h 50m

Wed 17/212:20 -

1 stop28h 50m

Deal found 22/8฿69,358

Find flight deals from Thailand to Dulles Intl

Round-trip from	฿24,864
One-way from	฿12,694
Popular in	August
Cheapest in	October
Average price	฿69,031

ซาอุเดียแอร์ไลน์
2/11-6/11
2 total stops
66h 20m total
Thailand to Washington, D.C.

Search Deals

เอทิฮัดแอร์เวย์
26/10
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 (฿246,781 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (฿84,798 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

Thu 1/10

09:35-15:35

1 stop41h 00m

Washington, D.C. Dulles Intl

Sat 31/10

13:17-11:30

3 stops35h 13m

฿33,927

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

14:35-06:05

1 stop27h 30m

฿34,025

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 11/9

07:00-00:44

2 stops28h 44m

Washington, D.C. Dulles Intl

Mon 14/9

13:00-09:35

2 stops33h 35m

฿34,090

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sun 25/10

16:55-17:24

3 stops35h 29m

Washington, D.C. Dulles Intl

Fri 30/10

22:10-11:30

2 stops50h 20m

฿34,417

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Mon 21/12

16:55-11:54

3 stops30h 59m

Washington, D.C. Dulles Intl

Tue 19/1

22:10-11:30

2 stops49h 20m

฿34,450

Fastest return journey

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 11/9

15:55-09:45

1 stop28h 50m

Washington, D.C. Dulles Intl

Mon 14/9

15:10-23:55

1 stop21h 45m

฿34,548

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 6/10

15:45-13:59

3 stops33h 14m

Washington, D.C. Dulles Intl

Tue 13/10

18:37-09:35

2 stops27h 58m

฿34,875

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Wed 23/12

16:55-16:04

3 stops35h 09m

Washington, D.C. Dulles Intl

Tue 5/1

08:25-11:30

2 stops39h 05m

฿34,941

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

฿35,235

Chiang MaiWashington, D.C.

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

CNXIAD

Chiang Mai

Mon 2/11

09:10-09:05

1 stop35h 55m

Washington, D.C. Dulles Intl

Fri 6/11

10:30-22:20

2 stops23h 50m

฿36,904

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 54 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, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿34,090). Flying from Thailand to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of ฿44,690). 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. Dulles Intl Airport?

To ensure you get the cheapest price possible for a flight from Thailand to Washington, D.C. Dulles Intl Airport, 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 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

1,221 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

1,221 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

United Airlines

7.4

Good

10,124 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

เอทิฮัดแอร์เวย์

7.3

Good

1,515 reviews

Korean Air

8.4

Very Good

1,221 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 Emirates can get you from Thailand to Washington, D.C. Dulles Intl Airport in just under 35h 55m. Your travel time can differ by up to 9h 05m. 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, March is the cheapest month in which you can book a flight from Thailand to Washington, D.C. Dulles Intl Airport (average of ฿34,090). Flying from Thailand to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of ฿44,690). 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฿26,478	Average฿34,252	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
เอทิฮัดแอร์เวย์	Cheapest฿32,635	Average฿33,029	FlexibilityNo cancel fee	On-time75%	Search เอทิฮัดแอร์เวย์ flights
Korean Air	Cheapest฿32,987	Average฿36,828	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.

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

Not ready to book yet? You can track prices for flights from Thailand to Dulles Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Thailand to Washington, D.C. Dulles Intl Airport from ฿12,694

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 26/10. 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 26 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 26 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 26 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 26 August 2026.

Last-minute flights from Thailand to Dulles IntlDiscover last-minute flight deals from Thailand to Dulles Intl. Data last updated 26 August 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Dulles Intl. Data last updated 26 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 26 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 26 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?

How far ahead should I 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 26 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 26 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 26 August 2026.

Last-minute flights from Thailand to Dulles Intl
Discover last-minute flight deals from Thailand to Dulles Intl. Data last updated 26 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 26 August 2026.