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 22h 57m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 27h 13m. Keep in mind that layovers or delays could extend your travel time.

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

Turkish Airlines is the most popular carrier operating from Washington, D.C. to Bangkok

What airlines fly to Bangkok?

Qatar Airways, Turkish Airlines and Etihad Airways 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 21 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

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 21 as of August 2025.

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.

$324 Cheap Flights from Washington, D.C. to Bangkok in 2025

Q: 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 $898 to $1,203. The lowest price recently found on this route was $781.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

5:35 am - 10:45 pmBWI-BKK

29h 10m2 stops

11:35 pm - 7:19 pmBKK-BWI

31h 44m2 stops

$781

Find Deal

Mon, Nov 3 - Mon, Nov 17

5:45 am - 12:15 pmBWI-BKK

43h 30m2 stops

11:20 pm - 7:01 amBKK-BWI

42h 41m2 stops

$786

Find Deal

Sat, Sep 20 - Tue, Sep 30

10:05 pm - 7:20 amIAD-BKK

22h 15m1 stop

2:55 am - 4:10 pmBKK-IAD

24h 15m1 stop

$870Etihad Airways

Find Deal

Thu, Sep 25 - Fri, Oct 17

10:05 pm - 11:55 pmIAD-BKK

38h 50m1 stop

10:05 am - 4:10 pmBKK-IAD

41h 05m1 stop

$871Etihad Airways

Find Deal

Tue, Sep 30 - Fri, Oct 10

1:30 pm - 4:20 amIAD-BKK

26h 50m1 stop

10:10 am - 8:15 pmBKK-IAD

45h 05m1 stop

$876Turkish Airlines

Find Deal

Mon, Feb 9 - Mon, Mar 9

2:30 pm - 4:20 amIAD-BKK

26h 50m1 stop

5:50 am - 11:45 amBKK-IAD

41h 55m1 stop

$880Turkish Airlines

Find Deal

Tue, Oct 28 - Mon, Nov 10

10:08 pm - 12:05 amIAD-BKK

37h 57m2 stops

9:25 am - 9:10 amBKK-IAD

35h 45m1 stop

$927United Airlines

Find Deal

Wed, Dec 3 - Wed, Feb 4

2:51 pm - 11:25 amDCA-BKK

32h 34m3 stops

9:25 am - 9:55 pmBKK-DCA

24h 30m2 stops

$933United Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 19

5:00 pm - 11:20 pmDCA-BKK

42h 20m2 stops

12:55 am - 1:25 pmBKK-DCA

24h 30m2 stops

$939Korean Air

Find Deal

Sun, Jan 18 - Tue, Feb 3

5:00 am - 8:30 pmDCA-BKK

27h 30m2 stops

12:55 am - 12:56 pmBKK-DCA

24h 01m2 stops

$973Korean Air

Find Deal

Sun, Nov 2 - Tue, Nov 18

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

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

Korean Air

Sep 3

DCA8:35 amWashington, D.C. Reagan-National

29h 30m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 9

BKK9:40 pmBangkok Suvarnabhumi

28h 27m

2 stops

DCA3:07 pmWashington, D.C. Reagan-National

$934

Find similar

Korean Air

Jan 18

DCA5:00 pmWashington, D.C. Reagan-National

42h 20m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Feb 3

BKK12:55 amBangkok Suvarnabhumi

24h 30m

2 stops

DCA1:25 pmWashington, D.C. Reagan-National

$939

Find similar

Korean Air

Sep 5

IAD1:15 pmWashington, D.C. Dulles Intl

24h 50m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Sep 17

BKK2:35 amBangkok Suvarnabhumi

32h 38m

2 stops

IAD12:13 amWashington, D.C. Dulles Intl

$946

Find similar

IndiGo flights from Washington, D.C. to Bangkok

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

IndiGo

Sep 18

IAD1:30 pmWashington, D.C. Dulles Intl

46h 10m

2 stops

BKK10:40 pmBangkok Suvarnabhumi

Sep 25

BKK11:40 pmBangkok Suvarnabhumi

47h 05m

2 stops

IAD11:45 amWashington, D.C. Dulles Intl

$890

Find similar

IndiGo

Sep 18

IAD1:30 pmWashington, D.C. Dulles Intl

46h 10m

2 stops

BKK10:40 pmBangkok Suvarnabhumi

Sep 25

BKK11:40 pmBangkok Suvarnabhumi

47h 05m

2 stops

IAD11:45 amWashington, D.C. Dulles Intl

$891

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Mon 11/3

5:35 am-10:45 pm

2 stops29h 10m

Bangkok Suvarnabhumi

Mon 11/17

11:35 pm-7:19 pm

2 stops31h 44m

$781

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Sat 9/20

5:45 am-12:15 pm

2 stops43h 30m

Bangkok Suvarnabhumi

Tue 9/30

11:20 pm-7:01 am

2 stops42h 41m

$786

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 9/25

10:05 pm-7:20 am

1 stop22h 15m

Bangkok Suvarnabhumi

Fri 10/17

2:55 am-4:10 pm

1 stop24h 15m

$870

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 9/30

10:05 pm-11:55 pm

1 stop38h 50m

Bangkok Suvarnabhumi

Fri 10/10

10:05 am-4:10 pm

1 stop41h 05m

$871

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/9

1:30 pm-4:20 am

1 stop26h 50m

Bangkok Suvarnabhumi

Mon 3/9

10:10 am-8:15 pm

1 stop45h 05m

$876

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 10/28

2:30 pm-4:20 am

1 stop26h 50m

Bangkok Suvarnabhumi

Mon 11/10

5:50 am-11:45 am

1 stop41h 55m

$880

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 12/3

10:08 pm-12:05 am

2 stops37h 57m

Bangkok Suvarnabhumi

Wed 2/4

9:25 am-9:10 am

1 stop35h 45m

$927

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 11/5

2:51 pm-11:25 am

3 stops32h 34m

Bangkok Suvarnabhumi

Wed 11/19

9:25 am-9:55 pm

2 stops24h 30m

$933

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Sun 1/18

5:00 pm-11:20 pm

2 stops42h 20m

Bangkok Suvarnabhumi

Tue 2/3

12:55 am-1:25 pm

2 stops24h 30m

$939

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Sun 11/2

5:00 am-8:30 pm

2 stops27h 30m

Bangkok Suvarnabhumi

Tue 11/18

12:55 am-12:56 pm

2 stops24h 01m

$973

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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?

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 August instead. Flights to Bangkok in August, while not as cheap as those in September, still average around $1,054.

What is the cheapest day to depart on your flight to Bangkok?

On average, the least expensive day to fly to Bangkok from Washington, D.C. is on a Saturday. momondo users have found tickets for Saturday departures for as low as $1,210. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Washington, D.C. to Bangkok on a Friday will generally be more expensive and average around $1,354. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Bangkok?

According to our data, the cheapest time of day to fly to Bangkok is in the evening. momondo users have found flights departing from Washington, D.C. to Bangkok in the evening for as low as $1,143. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $1,365. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight 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 $1,224 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 $1,039 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

Direct flights	None

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

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 20h 45m.
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 21 as of August 2025.
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 China	PriceFrom $565	Free Cancellation	Rating 7.3 95 reviews	Search Air China flights
SAUDIA	PriceFrom $588	Free Cancellation	Rating 7.4 629 reviews	Search SAUDIA flights
Air India	PriceFrom $700	Free Cancellation	Rating 5.5 2,929 reviews	Search Air India flights
Korean Air	PriceFrom $802	Free Cancellation	Rating 8.4 1,133 reviews	Search Korean Air flights
ANA	PriceFrom $896	Free Cancellation	Rating 8.4 943 reviews	Search ANA flights
Etihad Airways	PriceFrom $909	Free Cancellation	Rating 7.4 1,241 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $916	Free Cancellation	Rating 7.3 3,955 reviews	Search Turkish Airlines flights
Delta	PriceFrom $928	Free Cancellation	Rating 7.9 7,977 reviews	Search Delta flights
Alaska Airlines	PriceFrom $936	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $939	Free Cancellation	Rating 7.4 8,944 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.

An easier way to manage your Bangkok trip

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Cheap flights from Washington, D.C. to Bangkok from $324

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 10/18. 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

IndiGo flights from Washington, D.C. to Bangkok

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

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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

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?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Washington, D.C. during August instead. Flights to Bangkok in August, while not as cheap as those in September, still average around $1,054.

What is the cheapest day to depart on your flight to Bangkok?

What is the cheapest time of day to depart on your flight to Bangkok?

How far in advance should I book a flight to Bangkok?

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

Turkish Airlines is the most popular carrier operating 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

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

Direct flights

How far is Washington, D.C. to Bangkok by plane?

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

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

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

What documentation or ID do you need to fly 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?

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

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

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

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

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