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

For as low as ฿33,927, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Bangkok in 41h. 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 (฿26,478), เอทิฮัดแอร์เวย์ (฿32,635), and Korean Air (฿32,987) offers the cheapest pricing from Bangkok to Washington, D.C. Dulles Intl Airport. United Airlines is currently priced 31% 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.

฿20,120+ 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 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

Sat 19/1217:15 -

2 stops27h 50m

Fri 15/114:35 -

2 stops25h 55m

Deal found 25/8฿42,662

Sun 13/912:25 -

2 stops32h 20m

Sat 26/911:05 -

2 stops25h 25m

Deal found 25/8฿43,480

Sun 25/1016:40 -

2 stops28h 25m

Fri 30/1011:30 -

2 stops24h 50m

Deal found 25/8฿46,686

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 26 August 2026.

Thu 1/1009:35 -

1 stop41h 00m

Sat 31/1013:17 -

3 stops35h 13m

Deal found 25/8฿33,927

Fri 11/915:55 -

1 stop28h 50m

Mon 14/915:10 -

1 stop21h 45m

Deal found 25/8฿34,548

Tue 6/1009:50 -

2 stops24h 45m

Tue 13/1006:00 -

2 stops28h 45m

Deal found 22/8฿38,311

Sun 25/1023:00 -

1 stop45h 00m

Fri 30/1011:15 -

1 stop21h 55m

Deal found 25/8฿48,747

Sat 19/1211:10 -

1 stop33h 00m

Fri 15/110:30 -

1 stop33h 25m

Deal found 26/8฿55,977

Fri 11/907:00 -

2 stops28h 44m

Mon 14/913:00 -

2 stops33h 35m

Deal found 25/8฿34,090

Sun 25/1016:55 -

3 stops35h 29m

Fri 30/1022:10 -

2 stops50h 20m

Deal found 25/8฿34,417

Mon 21/1216:55 -

3 stops30h 59m

Tue 19/122:10 -

2 stops49h 20m

Deal found 21/8฿34,450

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

Fri 9/1015:45 -

2 stops26h 36m

Fri 16/1009:45 -

2 stops36h 50m

Deal found 25/8฿38,900

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 Bangkok to Dulles Intl

Round-trip from	฿24,864
One-way from	฿20,120
Popular in	August
Cheapest in	March
Average price	฿44,690

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

Search Deals

10/9
3 total stops
36h 25m total
Bangkok to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 0% potential increase in price (฿5,157 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (฿17,679 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 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 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

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

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Tue 6/10

09:50-23:35

2 stops24h 45m

Washington, D.C. Dulles Intl

Tue 13/10

06:00-21:45

2 stops28h 45m

฿38,311

BangkokWashington, D.C.

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

BKKIAD

Bangkok Suvarnabhumi

Fri 9/10

15:45-07:21

2 stops26h 36m

Washington, D.C. Dulles Intl

Fri 16/10

09:45-09:35

2 stops36h 50m

฿38,900

BangkokWashington, D.C.

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

DMKIAD

Bangkok Don Mueang Intl

Sun 25/10

23:00-09:00

1 stop45h 00m

Washington, D.C. Dulles Intl

Fri 30/10

11:15-20:10

1 stop21h 55m

฿48,747

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 39 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, March is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. Dulles Intl Airport (average of ฿34,090). Flying from Bangkok 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 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 ฿34,794 and ฿43,104 in November.
The cheapest return price found within the last 5 days was ฿24,864 on ซาอุเดียแอร์ไลน์ (2 Nov–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

1,221 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 Bangkok to Washington, D.C. Dulles Intl Airport?
For as low as ฿33,927, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Bangkok in 41h. 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 (฿26,478), เอทิฮัดแอร์เวย์ (฿32,635), and Korean Air (฿32,987) offers the cheapest pricing from Bangkok to Washington, D.C. Dulles Intl Airport. United Airlines is currently priced 31% 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, March is the cheapest month in which you can book a flight from Bangkok to Washington, D.C. Dulles Intl Airport (average of ฿34,090). Flying from Bangkok 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

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Popular flights

Alternative routes for Bangkok 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 Bangkok 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 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 ฿20,120

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 10/9. 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 26 August 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 26 August 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 26 August 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 26 August 2026.

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

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

Search for one-way flight options from Bangkok to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 26 August 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 ฿34,794 and ฿43,104 in November.The cheapest return price found within the last 5 days was ฿24,864 on ซาอุเดียแอร์ไลน์ (2 Nov–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 26 August 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 26 August 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 26 August 2026.

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

Bangkok to Washington, D.C. Dulles Intl Airport flights typically cost between ฿34,794 and ฿43,104 in November.
The cheapest return price found within the last 5 days was ฿24,864 on ซาอุเดียแอร์ไลน์ (2 Nov–6 Nov).