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

Korean Air and IndiGo 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 21 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 42m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 27h 08m. 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 21 as of July 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.

$389 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 $1,058 to $1,575. The lowest price recently found on this route was $737.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

8:35 am - 1:05 amDCA-BKK

29h 30m2 stops

11:30 pm - 3:03 pmBKK-DCA

26h 33m2 stops

$737Korean Air

Find Deal

Mon, Sep 1 - Mon, Sep 15

6:05 am - 1:05 amDCA-BKK

32h 00m2 stops

9:40 pm - 3:03 pmBKK-DCA

28h 23m2 stops

$747Korean Air

Find Deal

Tue, Sep 16 - Tue, Sep 23

9:40 pm - 5:15 amIAD-BKK

20h 35m1 stop

10:45 pm - 11:45 amBKK-IAD

24h 00m1 stop

$824Turkish Airlines

Find Deal

Wed, Sep 17 - Wed, Oct 1

9:40 pm - 3:25 pmIAD-BKK

30h 45m1 stop

6:45 am - 11:45 amBKK-IAD

40h 00m1 stop

$830Turkish Airlines

Find Deal

Wed, Sep 17 - Wed, Oct 1

10:00 pm - 6:05 pmIAD-BKK

32h 05m1 stop

7:30 pm - 6:30 pmBKK-IAD

35h 00m1 stop

$864Air China

Find Deal

Fri, Nov 21 - Thu, Nov 27

11:00 pm - 6:10 pmIAD-BKK

32h 10m1 stop

1:30 am - 7:30 pmBKK-IAD

29h 00m1 stop

$865Air China

Find Deal

Fri, Sep 5 - Thu, Sep 11

1:15 pm - 1:05 amIAD-BKK

24h 50m1 stop

9:50 am - 11:17 pmBKK-IAD

24h 27m2 stops

$869

Find Deal

Mon, Sep 8 - Tue, Sep 30

12:20 pm - 6:00 amIAD-BKK

30h 40m1 stop

9:35 pm - 3:35 pmBKK-IAD

29h 00m1 stop

$873ANA

Find Deal

Wed, Aug 27 - Tue, Sep 2

5:45 am - 11:10 pmBWI-BKK

30h 25m2 stops

1:20 am - 6:54 amBKK-BWI

40h 34m2 stops

$909

Find Deal

Thu, Aug 28 - Sat, Aug 30

3:30 pm - 6:00 amDCA-BKK

27h 30m2 stops

10:50 pm - 2:10 pmBKK-DCA

26h 20m2 stops

$925ANA

Find Deal

Mon, Oct 6 - Mon, Oct 27

Turkish Airlines flights from Washington, D.C. to Bangkok

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

Turkish Airlines

Sep 17

IAD9:40 pmWashington, D.C. Dulles Intl

20h 35m

1 stop

BKK5:15 amBangkok Suvarnabhumi

Oct 1

BKK10:45 pmBangkok Suvarnabhumi

24h 00m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$824

Find similar

Turkish Airlines

Sep 17

IAD9:40 pmWashington, D.C. Dulles Intl

30h 45m

1 stop

BKK3:25 pmBangkok Suvarnabhumi

Oct 1

BKK6:45 amBangkok Suvarnabhumi

40h 00m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$830

Find similar

Turkish Airlines

Nov 5

IAD1:30 pmWashington, D.C. Dulles Intl

31h 10m

1 stop

BKK8:40 amBangkok Suvarnabhumi

Nov 11

BKK5:50 amBangkok Suvarnabhumi

41h 55m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$833

Find similar

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 1

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

29h 30m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 15

BKK11:30 pmBangkok Suvarnabhumi

26h 33m

2 stops

DCA3:03 pmWashington, D.C. Reagan-National

$737

Find similar

Korean Air

Sep 16

DCA6:05 amWashington, D.C. Reagan-National

32h 00m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 23

BKK9:40 pmBangkok Suvarnabhumi

28h 23m

2 stops

DCA3:03 pmWashington, D.C. Reagan-National

$747

Find similar

Korean Air

Oct 20

DCA8:20 amWashington, D.C. Reagan-National

29h 45m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Nov 2

BKK9:30 pmBangkok Suvarnabhumi

27h 52m

2 stops

DCA1:22 pmWashington, D.C. Reagan-National

$758

Find similar

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 $1,076.

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 $1,247 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 $1,134 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	$389
Fastest flight time	20h 35m
Direct flights	None
Airports in Bangkok	2 airports

The best one-way flight to Bangkok from Washington, D.C. in the past 72 hours is $389. The best round-trip flight deal from Washington, D.C. to Bangkok found on momondo in the last 72 hours is $737.

The fastest flight from Washington, D.C. to Bangkok takes 20h 35m

There are no direct flights from Washington, D.C. to Bangkok. Popular non-direct routes for this connection are Washington, D.C. Dulles Intl Airport - Bangkok Suvarnabhumi Airport, Washington, D.C. Dulles Intl Airport - Bangkok Don Mueang Intl Airport and Washington, D.C. Reagan-National Airport - Bangkok Suvarnabhumi Airport.

There are 2 airports near Bangkok: Bangkok Suvarnabhumi (BKK), Bangkok Don Mueang Intl (DMK)

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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 35m.
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 July 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
American Airlines	PriceFrom $219	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air China	PriceFrom $565	Free Cancellation	Rating 7.2 89 reviews	Search Air China flights
SAUDIA	PriceFrom $596	Free Cancellation	Rating 7.4 619 reviews	Search SAUDIA flights
Air India	PriceFrom $700	Free Cancellation	Rating 5.5 2,927 reviews	Search Air India flights
Korean Air	PriceFrom $808	Free Cancellation	Rating 8.4 1,109 reviews	Search Korean Air flights
ANA	PriceFrom $896	Free Cancellation	Rating 8.4 902 reviews	Search ANA flights
Etihad Airways	PriceFrom $916	Free Cancellation	Rating 7.4 1,222 reviews	Search Etihad Airways flights
Turkish Airlines	PriceFrom $918	Free Cancellation	Rating 7.3 3,901 reviews	Search Turkish Airlines flights
Delta	PriceFrom $928	Free Cancellation	Rating 8.0 7,953 reviews	Search Delta flights
Alaska Airlines	PriceFrom $936	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska 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 $389

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 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Turkish Airlines flights from Washington, D.C. to Bangkok

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

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

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

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 $1,076.

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?

Korean Air and IndiGo 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

Best Price Found

Fastest flight time

Direct flights

Airports in Bangkok

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