What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Bangkok?

Delta and Korean Air are the most popular carriers operating from Washington, D.C. Dulles Intl to Bangkok

What airlines fly to Bangkok?

Qatar Airways, Etihad Airways and Turkish Airlines are the top three most popular airlines that fly to Bangkok from Washington, D.C. Dulles Intl Airport according to our data. Qatar Airways is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 14 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Bangkok?

As of September 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Bangkok.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Bangkok?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Bangkok.

What documentation or ID do you need to fly to Bangkok?

The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$406 Cheap Flights from Washington, D.C. Dulles Intl Airport to Bangkok in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Bangkok

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One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:50 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

41h 40m1 stop Jeddah King Abdulaziz Intl

3:20 pm - 1:50 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

34h 30m1 stop Jeddah King Abdulaziz Intl

$890SAUDIA

Sat, Oct 31 - Fri, Nov 13

6:50 pm - 1:40 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

31h 50m1 stop Riyadh King Khaled Intl

3:20 pm - 1:50 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

34h 30m1 stop Jeddah King Abdulaziz Intl

$890SAUDIA

Fri, Oct 30 - Fri, Nov 6

3:10 pm - 11:55 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 45m1 stop Abu Dhabi Zayed Intl

9:15 am - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 30m1 stop Abu Dhabi Zayed Intl

$890Etihad Airways

Wed, Sep 30 - Wed, Oct 7

3:10 pm - 11:55 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 45m1 stop Abu Dhabi Zayed Intl

9:15 am - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 30m1 stop Abu Dhabi Zayed Intl

$890Etihad Airways

Sun, Sep 20 - Thu, Sep 24

11:50 am - 9:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

45h 40m1 stop Incheon Intl

9:40 pm - 9:50 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Incheon Intl

$939Korean Air

Mon, Nov 9 - Sun, Dec 13

11:50 am - 12:20 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

24h 30m1 stop Incheon Intl

9:40 pm - 9:50 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Incheon Intl

$939Korean Air

Mon, Nov 9 - Mon, Dec 7

7:00 am - 9:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 30m2 stops Salt Lake City Incheon Intl

11:15 pm - 4:18 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

29h 03m2 stops Incheon Intl Detroit Metropolitan Wayne County

$950Delta

Wed, Nov 25 - Sun, Dec 6

7:25 am - 12:45 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 20m2 stops Minneapolis St Paul Incheon Intl

12:55 am - 4:18 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

27h 23m2 stops Incheon Intl Detroit Metropolitan Wayne County

$950Delta

Tue, Nov 24 - Mon, Dec 14

1:20 pm - 9:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

44h 50m1 stop Incheon Intl

10:45 pm - 10:50 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 05m1 stop Incheon Intl

$965AIR PREMIA

Sun, Oct 4 - Sun, Oct 11

11:35 pm - 9:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

10:55 pm - 8:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

$1,613AIR PREMIA

Sun, Dec 13 - Thu, Jan 7

Cheap last minute flights

Enter your travel dates to find the best prices.

3:10 pm - 6:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

40h 00m1 stop Abu Dhabi Zayed Intl

3:55 pm - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

28h 50m1 stop Abu Dhabi Zayed Intl

$890Etihad Airways

Sun, Sep 13 - Mon, Sep 28

3:10 pm - 12:55 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 45m1 stop Abu Dhabi Zayed Intl

9:15 am - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 30m1 stop Abu Dhabi Zayed Intl

$890Etihad Airways

Thu, Sep 10 - Fri, Sep 18

1:20 pm - 9:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

44h 50m1 stop Incheon Intl

8:15 am - 10:00 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 45m1 stop Taipei City Taiwan Taoyuan Intl

$910Multiple Airlines

Fri, Sep 11 - Fri, Sep 18

3:10 pm - 1:40 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 30m1 stop Abu Dhabi Zayed Intl

5:15 pm - 10:00 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

39h 45m1 stop Taipei City Taiwan Taoyuan Intl

$944Multiple Airlines

Tue, Sep 8 - Thu, Sep 10

9:00 pm - 7:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

23h 35m1 stop Doha Hamad Intl

3:00 am - 3:40 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 40m1 stop Doha Hamad Intl

$979JetBlue

Thu, Sep 10 - Mon, Sep 21

1:15 pm - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

23h 20m1 stop Incheon Intl

9:40 pm - 11:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 25m1 stop Incheon Intl

$990Korean Air

Fri, Sep 11 - Sun, Sep 27

6:10 am - 1:05 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

31h 55m2 stops Detroit Metropolitan Wayne County Incheon Intl

9:50 am - 10:56 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 06m2 stops Incheon Intl Seattle/Tacoma Intl

$993Delta

Thu, Sep 10 - Wed, Sep 23

8:08 am - 1:05 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 57m2 stops Atlanta Hartsfield-Jackson Incheon Intl

11:30 pm - 11:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

22h 35m1 stop Incheon Intl

$995Korean Air

Sat, Sep 12 - Sat, Sep 26

10:55 am - 11:10 amIAD Washington, D.C. Dulles Intl-DMK Bangkok Don Mueang Intl

37h 15m1 stop Dubai Intl

12:10 pm - 8:50 amDMK Bangkok Don Mueang Intl-IAD Washington, D.C. Dulles Intl

31h 40m1 stop Dubai Intl

$996Emirates

Sun, Sep 13 - Mon, Sep 28

7:25 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 10m2 stops Seattle/Tacoma Intl Incheon Intl

9:50 am - 11:23 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 33m2 stops Incheon Intl Minneapolis St Paul

$1,000Delta

Wed, Sep 9 - Wed, Sep 23

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Air Canada flights from Washington, D.C. Dulles Intl Airport to Bangkok

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Bangkok flight tickets

Air Canada

Sep 23

IAD8:29 amWashington, D.C. Dulles Intl

26h 16m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 7

BKK7:00 amBangkok Suvarnabhumi

24h 25m

2 stops

IAD8:25 pmWashington, D.C. Dulles Intl

$911

Air Canada

Sep 13

IAD9:55 amWashington, D.C. Dulles Intl

26h 40m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 21

BKK9:35 pmBangkok Suvarnabhumi

33h 50m

2 stops

IAD8:25 pmWashington, D.C. Dulles Intl

$962

Air Canada

Sep 14

IAD8:29 amWashington, D.C. Dulles Intl

28h 06m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 29

BKK11:30 pmBangkok Suvarnabhumi

46h 43m

2 stops

IAD11:13 amWashington, D.C. Dulles Intl

$982

Korean Air flights from Washington, D.C. Dulles Intl Airport to Bangkok

Our best Korean Air deals on Washington, D.C. Dulles Intl Airport to Bangkok flight tickets

Korean Air

Nov 25

IAD11:50 amWashington, D.C. Dulles Intl

37h 35m

1 stop

BKK1:25 pmBangkok Suvarnabhumi

Dec 6

BKK9:40 pmBangkok Suvarnabhumi

24h 10m

1 stop

IAD9:50 amWashington, D.C. Dulles Intl

$939

Korean Air

Nov 25

IAD8:00 amWashington, D.C. Dulles Intl

28h 20m

2 stops

BKK12:20 amBangkok Suvarnabhumi

Dec 7

BKK9:40 pmBangkok Suvarnabhumi

24h 10m

1 stop

IAD9:50 amWashington, D.C. Dulles Intl

$945

Korean Air

Sep 12

IAD8:08 amWashington, D.C. Dulles Intl

29h 57m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 26

BKK11:30 pmBangkok Suvarnabhumi

22h 35m

1 stop

IAD11:05 amWashington, D.C. Dulles Intl

$995

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sat 10/31

6:50 pm-11:30 pm

1 stop41h 40m

Bangkok Suvarnabhumi

Fri 11/13

3:20 pm-1:50 pm

1 stop34h 30m

$890

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Fri 10/30

6:50 pm-1:40 pm

1 stop31h 50m

Bangkok Suvarnabhumi

Fri 11/6

3:20 pm-1:50 pm

1 stop34h 30m

$890

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 9/30

3:10 pm-11:55 pm

1 stop21h 45m

Bangkok Suvarnabhumi

Wed 10/7

9:15 am-9:45 am

1 stop35h 30m

$890

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 9/20

3:10 pm-11:55 pm

1 stop21h 45m

Bangkok Suvarnabhumi

Thu 9/24

9:15 am-9:45 am

1 stop35h 30m

$890

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 11/9

11:50 am-9:30 pm

1 stop45h 40m

Bangkok Suvarnabhumi

Sun 12/13

9:40 pm-9:50 am

1 stop24h 10m

$939

Quickest round-trip

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 11/9

11:50 am-12:20 am

1 stop24h 30m

Bangkok Suvarnabhumi

Mon 12/7

9:40 pm-9:50 am

1 stop24h 10m

$939

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 11/25

7:00 am-9:30 pm

2 stops26h 30m

Bangkok Suvarnabhumi

Sun 12/6

11:15 pm-4:18 pm

2 stops29h 03m

$950

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Tue 11/24

7:25 am-12:45 am

2 stops29h 20m

Bangkok Suvarnabhumi

Mon 12/14

12:55 am-4:18 pm

2 stops27h 23m

$950

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 10/4

1:20 pm-9:10 pm

1 stop44h 50m

Bangkok Suvarnabhumi

Sun 10/11

10:45 pm-10:50 am

1 stop23h 05m

$965

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 12/13

11:35 pm-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Thu 1/7

10:55 pm-8:35 pm

1 stop33h 40m

$1,613

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Bangkok

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Bangkok?

Prices are currently typical for flights on this route.

Typical prices usually range from $889 to $1,014.
The lowest price recently found on this route was $890.

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Washington, D.C. Dulles Intl Airport during October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $946.

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

You are more likely to see cheaper flights to Bangkok from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,120 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Washington, D.C. Dulles Intl Airport for as low as $996 on momondo.

Cheap Washington, D.C. Dulles Intl Airport to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Bangkok

Best Price Found	$406
Fastest flight time	21h 40m
Direct flights	None

The best one-way flight to Bangkok from Washington, D.C. Dulles Intl Airport in the past 72 hours is $406. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Bangkok found on momondo in the last 72 hours is $890.

The fastest flight from Washington, D.C. Dulles Intl Airport to Bangkok takes 21h 40m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Bangkok. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Bangkok.

Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Bangkok

How far is Washington, D.C. Dulles Intl to Bangkok by plane?
There are 8786.6 mi between Washington, D.C. Dulles Intl and Bangkok. A reasonable flight in good conditions will take 21h 40m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Bangkok?
Prices for flights from Washington, D.C. Dulles Intl Airport to Bangkok are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Bangkok?
As of September 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Bangkok.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Bangkok?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Washington, D.C. Dulles Intl Airport to Bangkok

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Bangkok with momondo

Airline	Rating	Free Cancellation	Price
AIR PREMIA	PriceFrom $784	Free Cancellation	Rating 8.1 106 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $785	Free Cancellation	Rating 7.3 1,533 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $814	Free Cancellation	Rating 7.3 3,734 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 4,477 reviews	Search Turkish Airlines flights
Alaska Airlines	PriceFrom $878	Free Cancellation	Rating 7.9 12,887 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $919	Free Cancellation	Rating 7.1 3,046 reviews	Search JetBlue flights
United Airlines	PriceFrom $932	Free Cancellation	Rating 7.4 10,176 reviews	Search United Airlines flights
Korean Air	PriceFrom $936	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
ANA	PriceFrom $955	Free Cancellation	Rating 8.3 1,312 reviews	Search ANA flights
EVA Air	PriceFrom $983	Free Cancellation	Rating 8.5 1,522 reviews	Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Bangkok?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Bangkok for you.

Can I find flights from Washington, D.C. to Bangkok with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Bangkok flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Bangkok?

momondo helps you find the best flight between Washington, D.C. and Bangkok by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Bangkok right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bangkok, momondo offers a useful price alert feature which will track prices for flights to Bangkok from Washington, D.C. and alert you when they change.

An easier way to manage your Bangkok trip

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Cheap flights from Washington, D.C. Dulles Intl Airport to Bangkok from $406

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Air Canada flights from Washington, D.C. Dulles Intl Airport to Bangkok

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Bangkok flight tickets

Korean Air flights from Washington, D.C. Dulles Intl Airport to Bangkok

Our best Korean Air deals on Washington, D.C. Dulles Intl Airport to Bangkok flight tickets

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

See travel insights to Bangkok from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Bangkok

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Bangkok?

What is the cheapest month to fly to Bangkok?

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Bangkok?

What airlines fly to Bangkok?

Cheap Washington, D.C. Dulles Intl Airport to Bangkok flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Bangkok

Best airlines flying from Washington, D.C. Dulles Intl Airport to Bangkok

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Bangkok with momondo

Why use momondo?

An easier way to manage your Bangkok trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok

Fly your favorite airline to Bangkok

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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Popular flights according to clicks in the last 7 days on momondo

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