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 12m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 27h. 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?

Etihad Airways, IndiGo, and Korean Air are the most popular carriers 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 41% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 18 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 18 as of November 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.

$351 Cheap Flights from Washington, D.C. to Bangkok in 2025/26

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 $1,093 to $1,932. The lowest price recently found on this route was $862.

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 11:20 pmIAD-BKK

20h 45m1 stop

7:35 pm - 9:05 amBKK-IAD

49h 30m2 stops

$862Etihad Airways

Find Deal

Sun, Jan 18 - Wed, Jan 28

2:35 pm - 11:20 pmIAD-BKK

20h 45m1 stop

7:35 pm - 9:05 amBKK-IAD

49h 30m2 stops

$864Etihad Airways

Find Deal

Thu, Jan 15 - Wed, Jan 28

2:35 pm - 6:00 pmIAD-BKK

39h 25m1 stop

9:25 am - 9:05 amBKK-IAD

35h 40m1 stop

$866Etihad Airways

Find Deal

Thu, Jan 15 - Thu, Feb 5

2:30 pm - 3:05 pmIAD-BKK

37h 35m1 stop

10:10 am - 12:45 pmBKK-IAD

37h 35m1 stop

$870Turkish Airlines

Find Deal

Fri, Mar 20 - Fri, Mar 27

1:20 pm - 3:25 pmIAD-BKK

39h 05m1 stop

10:45 pm - 11:35 amBKK-IAD

23h 50m1 stop

$871Turkish Airlines

Find Deal

Tue, May 12 - Fri, May 22

8:20 am - 11:55 pmIAD-BKK

28h 35m2 stops

1:55 pm - 10:05 amBKK-IAD

31h 10m1 stop

$878ANA

Find Deal

Tue, Apr 28 - Wed, May 20

2:00 pm - 5:10 amDCA-BKK

27h 10m2 stops

7:10 am - 7:13 pmBKK-DCA

24h 03m2 stops

$887ANA

Find Deal

Wed, Jan 28 - Thu, Feb 5

11:30 am - 9:45 amDCA-BKK

35h 15m3 stops

9:35 am - 8:43 pmBKK-DCA

46h 08m2 stops

$932United Airlines

Find Deal

Tue, Mar 31 - Mon, May 4

8:36 am - 12:45 amDCA-BKK

29h 09m2 stops

12:55 am - 5:00 pmBKK-DCA

27h 05m2 stops

$933Korean Air

Find Deal

Thu, Mar 12 - Wed, Mar 18

12:00 pm - 11:25 amDCA-BKK

36h 25m3 stops

7:00 am - 9:53 pmBKK-DCA

25h 53m2 stops

$935United Airlines

Find Deal

Mon, Mar 23 - Tue, Apr 28

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

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

Korean Air

Jan 19

IAD11:50 amWashington, D.C. Dulles Intl

24h 55m

1 stop

BKK12:45 amBangkok Suvarnabhumi

Feb 4

BKK12:55 amBangkok Suvarnabhumi

20h 55m

1 stop

IAD9:50 amWashington, D.C. Dulles Intl

$917

Find similar

Korean Air

Mar 12

DCA8:36 amWashington, D.C. Reagan-National

27h 44m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Mar 24

BKK9:30 pmBangkok Suvarnabhumi

30h 30m

2 stops

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

$933

Find similar

Korean Air

Apr 5

DCA5:05 pmWashington, D.C. Reagan-National

57h 10m

2 stops

BKK1:15 pmBangkok Suvarnabhumi

Apr 15

BKK11:30 pmBangkok Suvarnabhumi

26h 13m

2 stops

DCA2:43 pmWashington, D.C. Reagan-National

$964

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ITA Airways flights from Washington, D.C. to Bangkok

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

ITA Airways

Mar 17

IAD5:45 pmWashington, D.C. Dulles Intl

27h 25m

1 stop

BKK8:10 amBangkok Suvarnabhumi

Mar 25

BKK12:15 pmBangkok Suvarnabhumi

38h 25m

1 stop

IAD3:40 pmWashington, D.C. Dulles Intl

$890

Find similar

ITA Airways

Mar 13

IAD12:55 pmWashington, D.C. Dulles Intl

32h 15m

2 stops

BKK8:10 amBangkok Suvarnabhumi

Mar 28

BKK12:15 pmBangkok Suvarnabhumi

37h 25m

1 stop

IAD2:40 pmWashington, D.C. Dulles Intl

$914

Find similar

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

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 1/18

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Wed 1/28

7:35 pm-9:05 am

2 stops49h 30m

$862

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/15

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Wed 1/28

7:35 pm-9:05 am

2 stops49h 30m

$864

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/15

2:35 pm-6:00 pm

1 stop39h 25m

Bangkok Suvarnabhumi

Thu 2/5

9:25 am-9:05 am

1 stop35h 40m

$866

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 3/20

2:30 pm-3:05 pm

1 stop37h 35m

Bangkok Suvarnabhumi

Fri 3/27

10:10 am-12:45 pm

1 stop37h 35m

$870

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 5/12

1:20 pm-3:25 pm

1 stop39h 05m

Bangkok Suvarnabhumi

Fri 5/22

10:45 pm-11:35 am

1 stop23h 50m

$871

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 4/28

8:20 am-11:55 pm

2 stops28h 35m

Bangkok Suvarnabhumi

Wed 5/20

1:55 pm-10:05 am

1 stop31h 10m

$878

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 1/28

2:00 pm-5:10 am

2 stops27h 10m

Bangkok Suvarnabhumi

Thu 2/5

7:10 am-7:13 pm

2 stops24h 03m

$887

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 3/31

11:30 am-9:45 am

3 stops35h 15m

Bangkok Suvarnabhumi

Mon 5/4

9:35 am-8:43 pm

2 stops46h 08m

$932

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 3/12

8:36 am-12:45 am

2 stops29h 09m

Bangkok Suvarnabhumi

Wed 3/18

12:55 am-5:00 pm

2 stops27h 05m

$933

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 3/23

12:00 pm-11:25 am

3 stops36h 25m

Bangkok Suvarnabhumi

Tue 4/28

7:00 am-9:53 pm

2 stops25h 53m

$935

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?

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 $1,028.

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 $1,187 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 $1,025 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 18 as of November 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 7.2 126 reviews	Search Air China flights
Air India	PriceFrom $700	Free Cancellation	Rating 5.5 2,946 reviews	Search Air India flights
Korean Air	PriceFrom $802	Free Cancellation	Rating 8.4 1,170 reviews	Search Korean Air flights
Etihad Airways	PriceFrom $829	Free Cancellation	Rating 7.4 1,312 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $852	Free Cancellation	Rating 7.4 3,665 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $895	Free Cancellation	Rating 7.3 4,050 reviews	Search Turkish Airlines flights
ANA	PriceFrom $896	Free Cancellation	Rating 8.4 1,010 reviews	Search ANA flights
JetBlue	PriceFrom $900	Free Cancellation	Rating 7.2 2,903 reviews	Search JetBlue flights
Alaska Airlines	PriceFrom $920	Free Cancellation	Rating 8.0 11,340 reviews	Search Alaska Airlines flights
Delta	PriceFrom $928	Free Cancellation	Rating 7.9 7,993 reviews	Search Delta 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 $351

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 1/25. 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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Big names and deals

Filter for what you want

Filter for what you want

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

Cheap round-trip flights

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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

ITA Airways flights from Washington, D.C. to Bangkok

Our best ITA Airways 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

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 October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $1,028.

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?

Etihad Airways, IndiGo, and Korean Air are the most popular carriers 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