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 24h 13m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 26h 35m. Keep in mind that layovers or delays could extend your travel time.

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 41% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 15 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

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

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

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 15 as of September 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.

$406 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

Round-trip

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

9:40 am - 11:35 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

26h 55m2 stops Montreal Pierre Elliott Trudeau Intl Incheon Intl

11:30 pm - 9:50 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

33h 20m2 stops Incheon Intl Montreal Pierre Elliott Trudeau Intl

$904Air Canada

Tue, Sep 22 - Tue, Sep 29

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

29h 36m2 stops Toronto Pearson Intl Incheon Intl

7:00 am - 9:50 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 50m2 stops Tokyo Narita Montreal Pierre Elliott Trudeau Intl

$914Air Canada

Wed, Sep 23 - Thu, Oct 1

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

6:10 am - 11:20 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

29h 10m2 stops Detroit Metropolitan Wayne County Incheon Intl

9:40 am - 11:47 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

26h 07m2 stops Incheon Intl Minneapolis St Paul

$950Delta

Mon, Nov 9 - Thu, Dec 10

6:10 am - 12:45 amDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 35m2 stops Detroit Metropolitan Wayne County Incheon Intl

9:40 am - 11:43 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

26h 03m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$950Delta

Wed, Nov 25 - Wed, Dec 9

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

11:00 am - 9:55 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

23h 55m2 stops Toronto Pearson Intl Tokyo Narita

7:00 am - 9:50 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 50m2 stops Tokyo Narita Montreal Pierre Elliott Trudeau Intl

$983Air Canada

Wed, Sep 9 - Wed, Sep 16

6:05 am - 11:35 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 30m2 stops Minneapolis St Paul Incheon Intl

9:50 am - 11:59 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 09m2 stops Incheon Intl Minneapolis St Paul

$990Delta

Mon, Sep 7 - 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

6:05 am - 11:35 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 30m2 stops Minneapolis St Paul Incheon Intl

11:30 pm - 6:37 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

30h 07m2 stops Incheon Intl Detroit Metropolitan Wayne County

$991Delta

Mon, Sep 7 - Mon, Sep 21

6:00 am - 11:35 pmDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 35m2 stops Montreal Pierre Elliott Trudeau Intl Incheon Intl

9:35 pm - 7:59 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

33h 24m2 stops Tokyo Haneda Toronto Pearson Intl

$992Air Canada

Thu, Sep 10 - Sun, Sep 20

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

Our best Korean Air deals on Washington, D.C. 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

Nov 2

DCA6:59 amWashington, D.C. Reagan-National

28h 06m

2 stops

BKK11:05 pmBangkok Suvarnabhumi

Nov 23

BKK11:15 pmBangkok Suvarnabhumi

24h 14m

2 stops

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

$956

ANA flights from Washington, D.C. to Bangkok

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

ANA

Sep 22

DCA6:00 amWashington, D.C. Reagan-National

28h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 1

BKK7:00 amBangkok Suvarnabhumi

25h 50m

2 stops

DCA9:50 pmWashington, D.C. Reagan-National

$958

ANA

Oct 1

DCA9:30 amWashington, D.C. Reagan-National

32h 05m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Oct 4

BKK9:35 pmBangkok Suvarnabhumi

33h 34m

2 stops

DCA8:09 pmWashington, D.C. Reagan-National

$1,068

ANA

Oct 20

DCA3:30 pmWashington, D.C. Reagan-National

26h 05m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Nov 4

BKK12:10 amBangkok Suvarnabhumi

31h 05m

2 stops

DCA7:15 pmWashington, D.C. Reagan-National

$1,071

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. 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

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

DCABKK

Washington, D.C. Reagan-National

Tue 9/22

9:40 am-11:35 pm

2 stops26h 55m

Bangkok Suvarnabhumi

Tue 9/29

11:30 pm-9:50 pm

2 stops33h 20m

$904

Washington, D.C.Bangkok

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

DCABKK

Washington, D.C. Reagan-National

Wed 9/23

6:59 am-11:35 pm

2 stops29h 36m

Bangkok Suvarnabhumi

Thu 10/1

7:00 am-9:50 pm

2 stops25h 50m

$914

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

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

DCABKK

Washington, D.C. Reagan-National

Mon 11/9

6:10 am-11:20 pm

2 stops29h 10m

Bangkok Suvarnabhumi

Thu 12/10

9:40 am-11:47 pm

2 stops26h 07m

$950

Washington, D.C.Bangkok

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

DCABKK

Washington, D.C. Reagan-National

Wed 11/25

6:10 am-12:45 am

2 stops30h 35m

Bangkok Suvarnabhumi

Wed 12/9

9:40 am-11:43 pm

2 stops26h 03m

$950

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 $901 to $1,068.
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. during October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $969.

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 $1,120 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. for as low as $996 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

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

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

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 15 as of September 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 8.1 106 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 3,733 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 11,594 reviews	Search Air Canada 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 12,887 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 10,175 reviews	Search United Airlines flights
ANA	PriceFrom $945	Free Cancellation	Rating 8.3 1,312 reviews	Search ANA 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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Fly into one of these airports located in Bangkok

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

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 9/22. 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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Korean Air flights from Washington, D.C. to Bangkok

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

ANA flights from Washington, D.C. to Bangkok

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

momondo Fare Finder

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

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

Best Price Found

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

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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According to popular flight searches on momondo this year

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Explore popular destinations other users love

According to popular flight searches on momondo this year