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

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

What airlines fly to Bangkok?

Qatar Airways, Etihad Airways and United Airlines are the top three most popular airlines that fly to Bangkok from Washington, D.C. according to our data. Qatar Airways is the first choice among our users, with 40% 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 long does it take to fly to Bangkok?

Flight times from Washington, D.C. to Bangkok vary, but if you’re flying out of Washington, D.C. and flying into Bangkok Suvarnabhumi Airport (one of the most popular routes), then the duration is 23h 52m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 26h 30m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Washington, D.C. to Bangkok?

Prices for flights from Washington, D.C. to Bangkok are updated daily.

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

The number of operators available for flights from Washington, D.C. to Bangkok is 14 as of August 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Bangkok.

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

The travel and health documents you'll need for your trip to Bangkok may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$436 Cheap Flights from Washington, D.C. to Bangkok in 2026

Discover deals from 900+ travel sites with momondo.

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

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:45 am - 9:55 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

25h 10m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita

7:05 am - 11:13 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

39h 08m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$902Air Canada

Mon, Aug 31 - Mon, Sep 21

6:59 am - 11:35 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

29h 36m2 stops Toronto Pearson Intl Incheon Intl

7:05 am - 10:20 amBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

38h 15m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$902Air Canada

Wed, Sep 16 - Wed, Sep 23

2:35 pm - 7:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 40m1 stop Abu Dhabi Zayed Intl

7:55 pm - 9:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 10m1 stop Abu Dhabi Zayed Intl

$903Etihad Airways

Tue, Nov 17 - Tue, Dec 1

2:35 pm - 6:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 00m1 stop Abu Dhabi Zayed Intl

8:30 am - 9:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

36h 35m1 stop Abu Dhabi Zayed Intl

$903Etihad Airways

Tue, Jan 26 - Thu, Mar 4

6:59 am - 9:45 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

27h 46m2 stops Atlanta Hartsfield-Jackson Incheon Intl

11:30 pm - 2:10 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 40m2 stops Incheon Intl Boston Logan Intl

$905Korean Air

Thu, Sep 3 - Mon, Sep 14

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

$909AIR PREMIA

Fri, Nov 20 - Tue, Nov 24

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

23h 20m1 stop Incheon Intl

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

22h 35m1 stop Incheon Intl

$911Korean Air

Wed, Sep 16 - Sun, Sep 27

9:00 pm - 12:55 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 55m1 stop Doha Hamad Intl

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

23h 40m1 stop Doha Hamad Intl

$916Qatar Airways

Thu, Sep 24 - Wed, Sep 30

11:05 am - 8:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 20m1 stop Doha Hamad Intl

8:00 pm - 8:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Doha Hamad Intl

$918Qatar Airways

Thu, Sep 10 - Mon, Sep 21

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

44h 50m1 stop Incheon Intl

10:55 pm - 9:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

$922AIR PREMIA

Sun, Oct 4 - Tue, Oct 27

Cheap last minute flights

Enter your travel dates to find the best prices.

1:30 pm - 1:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

37h 05m1 stop Incheon Intl

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

22h 35m1 stop Incheon Intl

$916Korean Air

Thu, Aug 20 - Thu, Sep 3

8:28 am - 9:45 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 17m2 stops Atlanta Hartsfield-Jackson Incheon Intl

9:50 am - 11:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

36h 15m1 stop Incheon Intl

$922Korean Air

Wed, Aug 19 - Wed, Sep 16

7:10 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 25m2 stops Seattle/Tacoma Intl Incheon Intl

2:35 am - 11:43 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

32h 08m2 stops Incheon Intl Salt Lake City

$927Delta

Wed, Aug 19 - Tue, Sep 15

6:10 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

30h 25m2 stops Detroit Metropolitan Wayne County Incheon Intl

11:30 pm - 11:39 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 09m2 stops Incheon Intl Salt Lake City

$927Delta

Tue, Aug 18 - Tue, Sep 1

2:50 pm - 6:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

40h 20m1 stop Abu Dhabi Zayed Intl

9:00 pm - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Abu Dhabi Zayed Intl

$931Etihad Airways

Mon, Aug 17 - Sat, Sep 19

2:50 pm - 1:40 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 50m1 stop Abu Dhabi Zayed Intl

9:00 pm - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Abu Dhabi Zayed Intl

$931Etihad Airways

Wed, Aug 19 - Sat, Sep 19

10:40 am - 7:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 45m1 stop Doha Hamad Intl

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

23h 40m1 stop Doha Hamad Intl

$948Qatar Airways

Thu, Aug 20 - Sun, Sep 6

6:50 pm - 1:45 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

31h 55m1 stop Riyadh King Khaled Intl

3:25 pm - 3:45 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 20m1 stop Riyadh King Khaled Intl

$1,011SAUDIA

Sun, Aug 16 - Sat, Sep 19

2:50 pm - 12:55 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

23h 05m1 stop Abu Dhabi Zayed Intl

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

23h 05m1 stop Incheon Intl

$1,061Multiple Airlines

Wed, Aug 19 - Thu, Aug 27

9:00 pm - 12:55 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 55m1 stop Doha Hamad Intl

9:15 am - 3:40 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

41h 25m1 stop Doha Hamad Intl

$1,203Qatar Airways

Sun, Aug 16 - Sun, Aug 30

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Air China flights from Washington, D.C. to Bangkok

Our best Air China deals on Washington, D.C. to Bangkok flight tickets

Air China

Nov 27

IAD10:00 pmWashington, D.C. Dulles Intl

38h 10m

1 stop

BKK12:10 amBangkok Suvarnabhumi

Dec 17

BKK3:15 pmBangkok Suvarnabhumi

39h 15m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$918

Air China

Nov 3

IAD10:00 pmWashington, D.C. Dulles Intl

38h 10m

1 stop

BKK12:10 amBangkok Suvarnabhumi

Nov 30

BKK3:15 pmBangkok Suvarnabhumi

39h 15m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$950

Delta flights from Washington, D.C. to Bangkok

Our best Delta deals on Washington, D.C. to Bangkok flight tickets

Delta

Sep 4

DCA7:45 amWashington, D.C. Reagan-National

30h 20m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 14

BKK9:50 amBangkok Suvarnabhumi

25h 09m

2 stops

DCA11:59 pmWashington, D.C. Reagan-National

$922

Delta

Sep 4

DCA9:39 amWashington, D.C. Reagan-National

25h 06m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 14

BKK9:50 amBangkok Suvarnabhumi

24h 54m

2 stops

DCA11:44 pmWashington, D.C. Reagan-National

$927

Delta

Feb 5

DCA6:50 pmWashington, D.C. Reagan-National

40h 30m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Feb 21

BKK9:40 amBangkok Suvarnabhumi

25h 49m

2 stops

DCA11:29 pmWashington, D.C. Reagan-National

$951

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

Mon 8/31

9:45 am-9:55 pm

2 stops25h 10m

Bangkok Suvarnabhumi

Mon 9/21

7:05 am-11:13 am

2 stops39h 08m

$902

Washington, D.C.Bangkok

DCA Washington, D.C. Reagan-National - BKK Bangkok Suvarnabhumi

DCABKK

Washington, D.C. Reagan-National

Wed 9/16

6:59 am-11:35 pm

2 stops29h 36m

Bangkok Suvarnabhumi

Wed 9/23

7:05 am-10:20 am

2 stops38h 15m

$902

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Tue 11/17

2:35 pm-7:15 am

1 stop28h 40m

Bangkok Suvarnabhumi

Tue 12/1

7:55 pm-9:05 am

1 stop25h 10m

$903

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Tue 1/26

2:35 pm-6:35 am

1 stop28h 00m

Bangkok Suvarnabhumi

Thu 3/4

8:30 am-9:05 am

1 stop36h 35m

$903

Washington, D.C.Bangkok

DCA Washington, D.C. Reagan-National - BKK Bangkok Suvarnabhumi

DCABKK

Washington, D.C. Reagan-National

Thu 9/3

6:59 am-9:45 pm

2 stops27h 46m

Bangkok Suvarnabhumi

Mon 9/14

11:30 pm-2:10 pm

2 stops25h 40m

$905

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Fri 11/20

11:35 pm-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Tue 11/24

10:55 pm-8:35 pm

1 stop33h 40m

$909

Quickest round-trip

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 9/16

1:15 pm-11:35 pm

1 stop23h 20m

Bangkok Suvarnabhumi

Sun 9/27

11:30 pm-11:05 am

1 stop22h 35m

$911

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 9/24

9:00 pm-12:55 pm

1 stop28h 55m

Bangkok Suvarnabhumi

Wed 9/30

3:00 am-3:40 pm

1 stop23h 40m

$916

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 9/10

11:05 am-8:25 pm

1 stop22h 20m

Bangkok Suvarnabhumi

Mon 9/21

8:00 pm-8:45 am

1 stop23h 45m

$918

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

Tue 10/27

10:55 pm-9:35 pm

1 stop33h 40m

$922

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. 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

Other information

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

Prices are currently low for flights on this route.

Typical prices usually range from $964 to $1,322.
The lowest price recently found on this route was $902.

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. during October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $976.

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

You are more likely to see cheaper flights to Bangkok from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,113 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. for as low as $950 on momondo.

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

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

Fastest flight time	21h 40m
Direct flights	None

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

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

Search flight deals

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

How far is Washington, D.C. to Bangkok by plane?
The straight-line distance from Washington, D.C. to Bangkok is 8788.5 mi. In terms of flight time, this usually takes a little over 21h 40m.
When did momondo last update prices for flights from Washington, D.C. to Bangkok?
Prices for flights from Washington, D.C. to Bangkok are updated daily.
How many operators does momondo search for flights from Washington, D.C. to Bangkok?
The number of operators available for flights from Washington, D.C. to Bangkok is 14 as of August 2026.
How old do you have to be to fly from Washington, D.C. to Bangkok?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The travel and health documents you'll need for your trip to Bangkok may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Washington, D.C. to Bangkok

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

Airline	Rating	Free Cancellation	Price
AIR PREMIA	PriceFrom $784	Free Cancellation	Rating 8.1 103 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $786	Free Cancellation	Rating 7.3 1,505 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $816	Free Cancellation	Rating 7.4 3,739 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 4,477 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $845	Free Cancellation	Rating 7.1 11,479 reviews	Search Air Canada flights
Air China	PriceFrom $864	Free Cancellation	Rating 7.4 160 reviews	Search Air China flights
Korean Air	PriceFrom $865	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Alaska Airlines	PriceFrom $878	Free Cancellation	Rating 7.9 12,811 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $919	Free Cancellation	Rating 7.1 3,038 reviews	Search JetBlue flights
United Airlines	PriceFrom $932	Free Cancellation	Rating 7.4 10,110 reviews	Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Bangkok. momondo saves you time and could save you money on your trip.

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

All flight searches from Washington, D.C. to Bangkok on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Washington, D.C. to Bangkok flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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 not ready to book a flight from Washington, D.C. to Bangkok now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bangkok and let you know when they change.

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Cheap flights from Washington, D.C. to Bangkok from $436

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Bangkok departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air China flights from Washington, D.C. to Bangkok

Our best Air China deals on Washington, D.C. to Bangkok flight tickets

Delta flights from Washington, D.C. to Bangkok

Our best Delta deals on Washington, D.C. to Bangkok flight tickets

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See travel insights to Bangkok from

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

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

What is the cheapest month to fly to Bangkok?

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

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

What airlines fly to Bangkok?

How long does it take to fly to Bangkok?

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

Fastest flight time

Direct flights

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

Best airlines flying from Washington, D.C. to Bangkok

Compare and see reviews for airlines that fly from Washington, D.C. 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

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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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