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

Etihad Airways and Delta are the most popular carriers operating from Washington, D.C. to Bangkok

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 10m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 27h 04m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bangkok?

Qatar Airways, Etihad Airways and Turkish 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 45% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 17 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 17 as of December 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.

$385 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 $1,266 to $2,463. The lowest price recently found on this route was $882.

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 11:25 pm

IAD

BKK

20h 50m1 stop

7:35 pm - 9:05 am

BKK

IAD

49h 30m2 stops

$882Etihad Airways

Fri, Jan 23 - Wed, Feb 4

10:40 am - 7:25 pm

IAD

BKK

20h 45m1 stop

9:05 am - 3:55 pm

BKK

IAD

42h 50m1 stop

$883Qatar Airways

Fri, Jan 23 - Thu, Feb 5

2:35 pm - 11:25 pm

IAD

BKK

20h 50m1 stop

8:05 pm - 9:05 am

BKK

IAD

25h 00m1 stop

$884Etihad Airways

Fri, Jan 23 - Mon, Feb 2

10:40 am - 7:25 pm

IAD

BKK

20h 45m1 stop

8:15 am - 3:55 pm

BKK

IAD

43h 40m1 stop

$892Qatar Airways

Fri, Feb 6 - Mon, Feb 23

2:00 pm - 6:30 am

DCA

BKK

28h 30m2 stops

7:10 am - 7:13 pm

BKK

DCA

24h 03m2 stops

$920ANA

Mon, Feb 2 - Mon, Feb 9

2:00 pm - 5:10 am

DCA

BKK

27h 10m2 stops

10:25 pm - 11:58 am

BKK

DCA

25h 33m2 stops

$923ANA

Mon, Jan 19 - Mon, Feb 2

6:00 am - 12:55 am

DCA

BKK

30h 55m2 stops

12:55 am - 4:29 pm

BKK

DCA

27h 34m2 stops

$926Korean Air

Thu, Jan 29 - Wed, Feb 4

6:00 am - 12:45 am

DCA

BKK

30h 45m2 stops

2:05 am - 1:50 pm

BKK

DCA

47h 45m2 stops

$930Korean Air

Thu, Jan 29 - Tue, Feb 10

8:20 am - 5:10 am

DCA

BKK

32h 50m2 stops

4:55 pm - 3:59 pm

BKK

DCA

34h 04m3 stops

$944United Airlines

Mon, Feb 16 - Tue, Mar 24

10:05 am - 11:25 am

BWI

BKK

37h 20m3 stops

4:55 pm - 11:19 pm

BKK

BWI

41h 24m3 stops

$959United Airlines

Tue, Jan 20 - Thu, Mar 12

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

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

Etihad Airways

May 3

IAD3:35 pmWashington, D.C. Dulles Intl

27h 55m

1 stop

BKK6:30 amBangkok Suvarnabhumi

May 16

BKK9:10 amBangkok Suvarnabhumi

35h 35m

1 stop

IAD9:45 amWashington, D.C. Dulles Intl

$875

Find similar

Etihad Airways

Jan 23

IAD2:35 pmWashington, D.C. Dulles Intl

20h 50m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

Feb 4

BKK7:35 pmBangkok Suvarnabhumi

49h 30m

2 stops

IAD9:05 amWashington, D.C. Dulles Intl

$882

Find similar

Etihad Airways

Jan 23

IAD2:35 pmWashington, D.C. Dulles Intl

20h 50m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

Feb 2

BKK8:05 pmBangkok Suvarnabhumi

25h 00m

1 stop

IAD9:05 amWashington, D.C. Dulles Intl

$884

Find similar

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

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

Qatar Airways

Jan 23

IAD10:40 amWashington, D.C. Dulles Intl

20h 45m

1 stop

BKK7:25 pmBangkok Suvarnabhumi

Feb 5

BKK9:05 amBangkok Suvarnabhumi

42h 50m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$883

Find similar

Qatar Airways

Feb 6

IAD10:40 amWashington, D.C. Dulles Intl

20h 45m

1 stop

BKK7:25 pmBangkok Suvarnabhumi

Feb 23

BKK8:15 amBangkok Suvarnabhumi

43h 40m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$892

Find similar

Qatar Airways

Jan 30

IAD10:40 amWashington, D.C. Dulles Intl

20h 45m

1 stop

BKK7:25 pmBangkok Suvarnabhumi

Feb 17

BKK9:05 amBangkok Suvarnabhumi

42h 50m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$905

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

Fri 1/23

2:35 pm-11:25 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Wed 2/4

7:35 pm-9:05 am

2 stops49h 30m

$882

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 1/23

10:40 am-7:25 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Thu 2/5

9:05 am-3:55 pm

1 stop42h 50m

$883

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 1/23

2:35 pm-11:25 pm

1 stop20h 50m

Bangkok Suvarnabhumi

Mon 2/2

8:05 pm-9:05 am

1 stop25h 00m

$884

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 2/6

10:40 am-7:25 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Mon 2/23

8:15 am-3:55 pm

1 stop43h 40m

$892

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 2/2

2:00 pm-6:30 am

2 stops28h 30m

Bangkok Suvarnabhumi

Mon 2/9

7:10 am-7:13 pm

2 stops24h 03m

$920

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 1/19

2:00 pm-5:10 am

2 stops27h 10m

Bangkok Suvarnabhumi

Mon 2/2

10:25 pm-11:58 am

2 stops25h 33m

$923

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 1/29

6:00 am-12:55 am

2 stops30h 55m

Bangkok Suvarnabhumi

Wed 2/4

12:55 am-4:29 pm

2 stops27h 34m

$926

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 1/29

6:00 am-12:45 am

2 stops30h 45m

Bangkok Suvarnabhumi

Tue 2/10

2:05 am-1:50 pm

2 stops47h 45m

$930

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 2/16

8:20 am-5:10 am

2 stops32h 50m

Bangkok Suvarnabhumi

Tue 3/24

4:55 pm-3:59 pm

3 stops34h 04m

$944

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Tue 1/20

10:05 am-11:25 am

3 stops37h 20m

Bangkok Suvarnabhumi

Thu 3/12

4:55 pm-11:19 pm

3 stops41h 24m

$959

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 $1,025.

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 $1,162 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 $1,052 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

Fastest flight time	20h 45m
Direct flights	None

The fastest flight from Washington, D.C. to Bangkok takes 20h 45m

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 17 as of December 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
United Airlines	PriceFrom $216	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Air China	PriceFrom $565	Free Cancellation	Rating 7.1 129 reviews	Search Air China flights
Air India	PriceFrom $702	Free Cancellation	Rating 5.5 2,952 reviews	Search Air India flights
Etihad Airways	PriceFrom $787	Free Cancellation	Rating 7.4 1,332 reviews	Search Etihad Airways flights
Korean Air	PriceFrom $802	Free Cancellation	Rating 8.4 1,186 reviews	Search Korean Air flights
Qatar Airways	PriceFrom $840	Free Cancellation	Rating 7.4 3,683 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $873	Free Cancellation	Rating 7.3 4,104 reviews	Search Turkish Airlines flights
ANA	PriceFrom $895	Free Cancellation	Rating 8.4 1,025 reviews	Search ANA flights
JetBlue	PriceFrom $900	Free Cancellation	Rating 7.2 2,895 reviews	Search JetBlue flights
Alaska Airlines	PriceFrom $920	Free Cancellation	Rating 8.0 11,470 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.

An easier way to manage your Bangkok trip

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Cheap flights from Washington, D.C. to Bangkok from $385

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 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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

Cheap one-way flights

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

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

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

Our best Qatar 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

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 $1,025.

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 and Delta 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

Fastest flight time

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