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

For as low as ฿34,418, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Bangkok in 26h 03m. The distance between Bangkok and Washington, D.C. Dulles Intl Airport is about 14149 km. This flight may include one or multiple stops.

What are the cheapest airlines flying from Bangkok to Washington, D.C. Dulles Intl Airport round-trip?

According to our current data, United Airlines (฿26,939), เอทิฮัดแอร์เวย์ (฿33,204), and Korean Air (฿33,562) offers the cheapest pricing from Bangkok to Washington, D.C. Dulles Intl Airport. United Airlines is currently priced 30% below the average price you’ll pay for this route.

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 airlines that fly from Bangkok to Washington, D.C. Dulles Intl Airport?

When booking a flight from Bangkok to Washington, D.C. Dulles Intl Airport, you may want to consider flying on United Airlines, เอทิฮัดแอร์เวย์ or Korean Air as they are the most popular for this route.

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

When flying from Bangkok to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Bangkok 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.

฿17,376+ Cheap Flights from Bangkok to Washington, D.C. Dulles Intl Airport

Cheap flight deals from Bangkok to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Bangkok to Dulles Intl
Explore the most affordable flight options available from Bangkok to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Fri 30/1014:30 -

2 stops30h 35m

Fri 6/1123:35 -

1 stop33h 50m

Deal found 15/9฿26,729

Fri 30/1015:20 -

1 stop34h 30m

Fri 6/1117:50 -

1 stop31h 50m

Deal found 15/9฿27,262

Wed 28/1008:10 -

1 stop24h 45m

Wed 4/1123:55 -

1 stop28h 55m

Deal found 13/9฿27,528

Mon 14/908:15 -

1 stop24h 45m

Sat 26/901:15 -

1 stop22h 25m

Deal found 12/9฿27,561

Thu 1/1017:15 -

1 stop39h 45m

Sat 17/1001:15 -

1 stop33h 20m

Deal found 11/9฿27,661

Fri 30/1017:30 -

1 stop39h 25m

Mon 2/1123:55 -

1 stop33h 50m

Deal found 14/9฿27,694

Fri 23/1017:15 -

1 stop39h 45m

Fri 30/1001:15 -

1 stop28h 35m

Deal found 13/9฿27,728

Fri 18/912:40 -

1 stop20h 20m

Wed 30/901:15 -

1 stop22h 25m

Deal found 13/9฿27,794

Sat 19/1212:40 -

1 stop20h 15m

Fri 15/123:55 -

1 stop22h 55m

Deal found 15/9฿28,393

Mon 21/1208:10 -

1 stop24h 45m

Wed 6/123:55 -

1 stop28h 55m

Deal found 13/9฿28,427

Tue 13/1016:45 -

2 stops28h 00m

Tue 20/1015:10 -

3 stops30h 05m

Deal found 13/9฿41,874

Sun 11/1016:45 -

2 stops28h 00m

Sun 18/1015:10 -

3 stops34h 30m

Deal found 13/9฿44,970

Best flights from Bangkok to Dulles Intl
Discover carefully curated flight deals from Bangkok to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Mon 21/1207:10 -

2 stops26h 03m

Sat 9/122:10 -

2 stops49h 20m

Deal found 12/9฿34,418

Fri 25/1220:50 -

1 stop24h 15m

Fri 1/114:35 -

1 stop20h 45m

Deal found 16/9฿38,179

Sat 10/1002:30 -

1 stop24h 10m

Sun 18/1021:00 -

1 stop30h 25m

Deal found 13/9฿38,213

Fri 23/1002:35 -

2 stops33h 07m

Mon 7/1207:26 -

2 stops27h 39m

Deal found 15/9฿38,346

Thu 4/308:15 -

1 stop35h 55m

Thu 25/321:05 -

2 stops30h 15m

Deal found 15/9฿40,177

Wed 3/223:00 -

1 stop45h 10m

Wed 24/215:41 -

2 stops28h 14m

Deal found 16/9฿55,755

Mon 21/1207:10 -

2 stops29h 28m

Sun 10/107:00 -

2 stops40h 30m

Deal found 13/9฿34,518

Tue 20/1007:00 -

2 stops35h 21m

Sun 25/1022:47 -

2 stops37h 03m

Deal found 13/9฿34,651

Wed 23/1220:50 -

1 stop24h 15m

Fri 1/114:35 -

1 stop20h 45m

Deal found 16/9฿39,877

Mon 19/1015:45 -

3 stops33h 14m

Mon 26/1017:56 -

2 stops30h 34m

Deal found 13/9฿34,784

Mon 21/1207:10 -

2 stops29h 28m

Wed 6/116:10 -

2 stops31h 20m

Deal found 13/9฿34,818

Mon 21/1208:55 -

1 stop35h 15m

Thu 7/110:30 -

1 stop21h 40m

Deal found 15/9฿56,853

Wed 6/111:10 -

1 stop33h 00m

Wed 12/510:55 -

1 stop22h 40m

Deal found 14/9฿61,214

Mon 21/1208:55 -

1 stop35h 15m

Sat 9/110:30 -

1 stop35h 35m

Deal found 12/9฿56,986

Wed 6/111:10 -

1 stop33h 00m

Fri 14/510:55 -

1 stop22h 40m

Deal found 14/9฿61,214

Thu 7/111:10 -

1 stop33h 00m

Tue 11/510:55 -

1 stop22h 40m

Deal found 15/9฿63,244

Tue 13/1012:10 -

2 stops45h 42m

Tue 20/1015:47 -

2 stops32h 23m

Deal found 13/9฿63,244

Mon 21/1211:10 -

2 stops46h 03m

Sat 9/110:30 -

1 stop21h 40m

Deal found 12/9฿63,311

Sun 10/111:10 -

1 stop33h 00m

Fri 14/510:55 -

1 stop22h 40m

Deal found 12/9฿63,411

Thu 7/111:10 -

1 stop33h 00m

Wed 12/510:55 -

1 stop22h 40m

Deal found 14/9฿63,577

Mon 8/323:00 -

2 stops34h 05m

Tue 10/810:55 -

1 stop23h 00m

Deal found 13/9฿64,143

Sat 16/111:10 -

1 stop33h 00m

Sat 15/510:55 -

1 stop22h 40m

Deal found 12/9฿64,675

Find flight deals from Bangkok to Dulles Intl

Round-trip from	฿26,729
One-way from	฿17,376
Popular in	December
Cheapest in	July
Average price	฿36,482

AIR PREMIA
30/10-6/11
3 total stops
64h 25m total
Bangkok to Washington, D.C.

Search Deals

7/11-31/12
2 total stops
47h 30m total
Bangkok to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (฿64,122 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease (฿11,471 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 Bangkok 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 22/10

02:35-23:59

2 stops32h 24m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿20,371

Fastest return journey

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Mon 5/10

21:00-09:45

1 stop23h 45m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿21,337

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 6/11

13:45-05:44

2 stops27h 59m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿22,368

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Mon 12/10

21:00-09:45

1 stop23h 45m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿24,565

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 5/1

19:10-07:25

2 stops48h 15m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿27,827

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Wed 4/11

16:55-11:28

3 stops30h 33m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿29,924

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Thu 21/1

16:55-11:42

3 stops30h 47m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿30,024

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Sat 7/11

16:55-11:28

3 stops30h 33m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿30,024

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 5/1

03:00-15:55

1 stop24h 55m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿30,191

BangkokWashington, D.C.

DMK Bangkok Don Mueang Intl - IAD Washington, D.C. Dulles Intl

DMKIAD

Bangkok Don Mueang Intl

Tue 29/12

08:55-08:10

1 stop35h 15m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-12:00

Nonstop0h 00m

฿31,589

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 43 resultsSorted by cheapest first

...

Best time to book a flight from Bangkok to Dulles Intl

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

TH1-IAD

BKK-IAD

DMK-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 Bangkok to Washington, D.C. Dulles Intl Airport

TH1-IAD

BKK-IAD

DMK-IAD

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

Currently, July is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. Dulles Intl Airport (average of ฿35,084). Flying from Bangkok to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of ฿42,806). 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 much does it cost for a return flight from Bangkok to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Bangkok to Washington, D.C. Dulles Intl Airport flights typically cost between ฿31,822 and ฿42,240 in October.
The cheapest return price found within the last 5 days was ฿26,729 on Multiple Airlines (30 Oct–6 Nov).

How far ahead should I book a flight from Bangkok to Washington, D.C. Dulles Intl Airport?

The best time to book flights from Bangkok to Washington, D.C. Dulles Intl Airport is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Dulles Intl

Check out reviews from past customers who have flown with Korean Air,United Airlines, andเอทิฮัดแอร์เวย์ from Bangkok 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

1,220 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

1,220 reviews

Korean Air

8.4

Very Good

1,220 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

United Airlines

7.4

Good

10,214 reviews

Korean Air

8.4

Very Good

1,220 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

เอทิฮัดแอร์เวย์

7.3

Good

1,536 reviews

Korean Air

8.4

Very Good

1,220 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 Bangkok to Washington, D.C. Dulles Intl Airport?
For as low as ฿34,418, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Bangkok in 26h 03m. The distance between Bangkok and Washington, D.C. Dulles Intl Airport is about 14149 km. This flight may include one or multiple stops.
What are the cheapest airlines flying from Bangkok to Washington, D.C. Dulles Intl Airport round-trip?
According to our current data, United Airlines (฿26,939), เอทิฮัดแอร์เวย์ (฿33,204), and Korean Air (฿33,562) offers the cheapest pricing from Bangkok to Washington, D.C. Dulles Intl Airport. United Airlines is currently priced 30% below the average price you’ll pay for this route.
Can I find deals for flights from Bangkok to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Bangkok to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Bangkok to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to Dulles Intl.
Can I find deals for business class flights from Bangkok to Dulles Intl?
Yes. Cheapflights offers flight deals from Bangkok 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 Bangkok to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. Dulles Intl Airport (average of ฿35,084). Flying from Bangkok to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of ฿42,806). 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

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Alternative routes for Bangkok to Dulles Intl

Chiang Mai to Dulles Intl flights

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Chiang Mai to Reagan-National flights

Top 3 airlines flying from Bangkok to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest฿26,939	Average฿34,849	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
เอทิฮัดแอร์เวย์	Cheapest฿33,204	Average฿33,604	FlexibilityNo cancel fee	On-time75%	Search เอทิฮัดแอร์เวย์ flights
Korean Air	Cheapest฿33,562	Average฿37,470	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Bangkok to Dulles Intl. 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 Bangkok to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Bangkok to Dulles Intl.

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

Need flexible booking options for your flight to Dulles Intl from Bangkok? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Bangkok today and book when prices fit your budget.

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Cheap flights from Bangkok to Washington, D.C. Dulles Intl Airport from ฿17,376

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Bangkok to Dulles Intl

Cheapest flights from Bangkok to Dulles IntlExplore the most affordable flight options available from Bangkok to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Explore the most affordable flight options available from Bangkok to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Bangkok to Dulles IntlDiscover carefully curated flight deals from Bangkok to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Bangkok to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Last-minute flights from Bangkok to Dulles IntlDiscover last-minute flight deals from Bangkok to Dulles Intl. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Bangkok to Dulles Intl. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Bangkok to Dulles IntlSearch for one-way flight options from Bangkok to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Bangkok to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Find flight deals from Bangkok 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 Bangkok to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Bangkok to Dulles Intl

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

Cheapflights Insights

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

How much does it cost for a return flight from Bangkok to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Bangkok to Washington, D.C. Dulles Intl Airport flights typically cost between ฿31,822 and ฿42,240 in October.The cheapest return price found within the last 5 days was ฿26,729 on Multiple Airlines (30 Oct–6 Nov).

How far ahead should I book a flight from Bangkok to Washington, D.C. Dulles Intl Airport?

The best time to book flights from Bangkok to Washington, D.C. Dulles Intl Airport is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Dulles Intl

Related info for your journey

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

What are the cheapest airlines flying from Bangkok to Washington, D.C. Dulles Intl Airport round-trip?

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

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

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

What is the cheapest month to book a flight from Bangkok 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 Bangkok 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 Bangkok to Dulles Intl by cabin class

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

Bangkok and Dulles Intl flights

Browse other Bangkok and Dulles Intl flight options. Last updated on 17 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 3 airlines flying from Bangkok to Dulles Intl

Fly with Cheapflights

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

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

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

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

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Travel Smart

Cheapest flights from Bangkok to Dulles Intl
Explore the most affordable flight options available from Bangkok to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Bangkok to Dulles Intl
Discover carefully curated flight deals from Bangkok to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Last-minute flights from Bangkok to Dulles Intl
Discover last-minute flight deals from Bangkok to Dulles Intl. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Bangkok to Dulles Intl
Search for one-way flight options from Bangkok to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Bangkok to Washington, D.C. Dulles Intl Airport flights typically cost between ฿31,822 and ฿42,240 in October.
The cheapest return price found within the last 5 days was ฿26,729 on Multiple Airlines (30 Oct–6 Nov).