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 02m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 27h 35m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bangkok?

Etihad Airways, Qatar Airways and United Airlines are the top three most popular airlines that fly to Bangkok from Washington, D.C. according to our data. Etihad Airways is the first choice among our users, with 37% 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 October 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.

$318 Cheap Flights from Washington, D.C. to Bangkok in 2026/27

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.

2:25 pm - 7:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 50m1 stop Abu Dhabi Zayed Intl

8:30 am - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

36h 30m1 stop Abu Dhabi Zayed Intl

$843Etihad Airways

Mon, Dec 7 - Wed, Dec 23

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

33h 50m1 stop Incheon Intl

7:30 pm - 6:30 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 00m1 stop Beijing Capital

$843Multiple Airlines

Wed, Nov 25 - Mon, Dec 7

2:25 pm - 7:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 50m1 stop Abu Dhabi Zayed Intl

8:30 am - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

36h 30m1 stop Abu Dhabi Zayed Intl

$845Etihad Airways

Thu, Feb 4 - Fri, Feb 19

12:35 am - 9:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

10:45 pm - 9:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 50m1 stop Incheon Intl

$847AIR PREMIA

Wed, Mar 24 - Sun, Apr 4

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

33h 50m1 stop Incheon Intl

10:45 pm - 9:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 50m1 stop Incheon Intl

$848AIR PREMIA

Wed, Nov 25 - Tue, Apr 20

10:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

38h 30m1 stop Addis Ababa Bole

1:35 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 25m2 stops Addis Ababa Bole Rome Fiumicino

$849Ethiopian Air

Mon, Nov 16 - Thu, Nov 26

1:30 pm - 4:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 45m1 stop Istanbul

5:55 am - 7:25 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 30m1 stop Istanbul

$863Turkish Airlines

Sun, Nov 15 - Tue, Dec 8

1:30 pm - 4:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 45m1 stop Istanbul

5:55 am - 7:25 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 30m1 stop Istanbul

$863Turkish Airlines

Sun, Nov 15 - Thu, Dec 10

12:50 pm - 11:05 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

23h 15m1 stop Incheon Intl

9:40 pm - 11:15 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 35m1 stop Incheon Intl

$864Korean Air

Thu, Mar 25 - Mon, Apr 5

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

24h 30m1 stop Incheon Intl

1:05 am - 9:50 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

20h 45m1 stop Incheon Intl

$864Korean Air

Thu, Feb 25 - Mon, Mar 8

Cheap last minute flights

Enter your travel dates to find the best prices.

9:50 pm - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

27h 40m2 stops Lome Addis Ababa Bole

1:55 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 05m2 stops Addis Ababa Bole Rome Fiumicino

$848Ethiopian Air

Sat, Oct 31 - Fri, Nov 13

11:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

38h 30m1 stop Addis Ababa Bole

1:55 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 05m2 stops Addis Ababa Bole Rome Fiumicino

$848Ethiopian Air

Sat, Oct 31 - Fri, Nov 13

2:25 pm - 11:40 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

8:50 pm - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Abu Dhabi Zayed Intl

$858Etihad Airways

Mon, Nov 2 - Tue, Nov 17

2:25 pm - 6:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 10m1 stop Abu Dhabi Zayed Intl

2:55 am - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 05m1 stop Abu Dhabi Zayed Intl

$863Etihad Airways

Mon, Nov 2 - Mon, Nov 16

8:05 pm - 1:05 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 00m1 stop Doha Hamad Intl

3:00 am - 3:55 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 55m1 stop Doha Hamad Intl

$939Qatar Airways

Mon, Nov 2 - Mon, Nov 16

2:30 pm - 4:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

25h 45m1 stop Istanbul

11:10 pm - 11:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 35m1 stop Istanbul

$943Turkish Airlines

Tue, Nov 3 - Tue, Nov 10

2:30 pm - 4:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

25h 45m1 stop Istanbul

11:10 pm - 11:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 35m1 stop Istanbul

$943Turkish Airlines

Tue, Nov 3 - Wed, Nov 11

8:05 pm - 1:05 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 00m1 stop Doha Hamad Intl

3:00 am - 3:55 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 55m1 stop Doha Hamad Intl

$945Qatar Airways

Mon, Nov 2 - Wed, Nov 18

6:10 am - 12:20 amDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 10m2 stops Detroit Metropolitan Wayne County Incheon Intl

9:50 am - 11:37 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 47m2 stops Incheon Intl Minneapolis St Paul

$970Delta

Wed, Nov 4 - Wed, Nov 11

6:10 am - 12:20 amDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 10m2 stops Detroit Metropolitan Wayne County Incheon Intl

11:15 pm - 12:40 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 25m2 stops Incheon Intl Boston Logan Intl

$1,102Delta

Wed, Nov 4 - Tue, Nov 10

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

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

Ethiopian Air

Oct 31

IAD11:00 amWashington, D.C. Dulles Intl

38h 30m

1 stop

BKK12:30 pmBangkok Suvarnabhumi

Nov 13

BKK1:55 amBangkok Suvarnabhumi

42h 05m

2 stops

IAD8:00 amWashington, D.C. Dulles Intl

$848

Ethiopian Air

Nov 13

IAD10:00 amWashington, D.C. Dulles Intl

38h 30m

1 stop

BKK12:30 pmBangkok Suvarnabhumi

Nov 26

BKK1:35 amBangkok Suvarnabhumi

42h 25m

2 stops

IAD8:00 amWashington, D.C. Dulles Intl

$849

Ethiopian Air

Nov 1

IAD10:00 amWashington, D.C. Dulles Intl

38h 30m

1 stop

BKK12:30 pmBangkok Suvarnabhumi

Nov 13

BKK1:55 amBangkok Suvarnabhumi

29h 10m

2 stops

IAD7:05 pmWashington, D.C. Dulles Intl

$850

Delta flights from Washington, D.C. to Bangkok

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

Delta

Jan 18

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

29h 05m

2 stops

BKK11:05 pmBangkok Suvarnabhumi

Feb 3

BKK11:15 pmBangkok Suvarnabhumi

36h 29m

2 stops

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

$901

Delta

Jan 24

DCA7:30 amWashington, D.C. Reagan-National

26h 00m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Feb 2

BKK1:05 amBangkok Suvarnabhumi

33h 37m

2 stops

DCA10:42 pmWashington, D.C. Reagan-National

$936

Delta

Jan 18

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

29h 21m

2 stops

BKK12:20 amBangkok Suvarnabhumi

Jan 27

BKK11:15 pmBangkok Suvarnabhumi

27h 43m

2 stops

DCA2:58 pmWashington, D.C. Reagan-National

$951

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

Mon 12/7

2:25 pm-7:15 am

1 stop28h 50m

Bangkok Suvarnabhumi

Wed 12/23

8:30 am-9:00 am

1 stop36h 30m

$843

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 11/25

11:35 pm-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Mon 12/7

7:30 pm-6:30 pm

1 stop35h 00m

$843

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 2/4

2:25 pm-7:15 am

1 stop28h 50m

Bangkok Suvarnabhumi

Fri 2/19

8:30 am-9:00 am

1 stop36h 30m

$845

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 3/24

12:35 am-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Sun 4/4

10:45 pm-9:35 pm

1 stop33h 50m

$847

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 11/25

11:35 pm-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Tue 4/20

10:45 pm-9:35 pm

1 stop33h 50m

$848

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 11/16

10:00 am-12:30 pm

1 stop38h 30m

Bangkok Suvarnabhumi

Thu 11/26

1:35 am-8:00 am

2 stops42h 25m

$849

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 11/15

1:30 pm-4:15 am

1 stop26h 45m

Bangkok Suvarnabhumi

Tue 12/8

5:55 am-7:25 pm

1 stop25h 30m

$863

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 11/15

1:30 pm-4:15 am

1 stop26h 45m

Bangkok Suvarnabhumi

Thu 12/10

5:55 am-7:25 pm

1 stop25h 30m

$863

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 3/25

12:50 pm-11:05 pm

1 stop23h 15m

Bangkok Suvarnabhumi

Mon 4/5

9:40 pm-11:15 am

1 stop24h 35m

$864

Quickest round-trip

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 2/25

11:50 am-12:20 am

1 stop24h 30m

Bangkok Suvarnabhumi

Mon 3/8

1:05 am-9:50 am

1 stop20h 45m

$864

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 $912 to $1,126.
The lowest price recently found on this route was $843.

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 February instead. Flights to Bangkok in February, while not as cheap as those in September, still average around $991.

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 $1,107 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 $997 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	$318
Fastest flight time	21h 15m
Direct flights	None

The best one-way flight to Bangkok from Washington, D.C. in the past 72 hours is $318. The best round-trip flight deal from Washington, D.C. to Bangkok found on momondo in the last 72 hours is $843.

The fastest flight from Washington, D.C. to Bangkok takes 21h 15m

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 15m.
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 October 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 $647	Free Cancellation	Rating 8.0 112 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $790	Free Cancellation	Rating 7.3 1,549 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $824	Free Cancellation	Rating 7.3 3,713 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $834	Free Cancellation	Rating 7.4 4,461 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $845	Free Cancellation	Rating 7.1 11,830 reviews	Search Air Canada flights
Korean Air	PriceFrom $908	Free Cancellation	Rating 8.4 1,219 reviews	Search Korean Air flights
United Airlines	PriceFrom $936	Free Cancellation	Rating 7.3 10,447 reviews	Search United Airlines flights
ANA	PriceFrom $945	Free Cancellation	Rating 8.3 1,337 reviews	Search ANA flights
Delta	PriceFrom $977	Free Cancellation	Rating 7.8 8,689 reviews	Search Delta flights
EVA Air	PriceFrom $986	Free Cancellation	Rating 8.5 1,552 reviews	Search EVA Air 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 $318

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 11/25. 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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Ethiopian Air flights from Washington, D.C. to Bangkok

Our best Ethiopian Air 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

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

Popular cities in Thailand

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

Fly to other destinations from Washington, D.C.

According to popular flight searches on momondo this year

Complete your trip to Bangkok

Explore popular destinations other users love

According to popular flight searches on momondo this year