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 25m on average. Another popular route from Washington, D.C. to Bangkok is flying from Baltimore to Bangkok Suvarnabhumi Airport, which will take roughly 27h 45m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bangkok?

Qatar Airways, Etihad Airways and United 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 40% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 14 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?

Etihad Airways, Qatar Airways, and Delta 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 14 as of July 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.

$477 Cheap Flights from Washington, D.C. to Bangkok in 2026

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 $1,051 to $1,499. The lowest price recently found on this route was $929.

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.

9:00 pm - 7:35 am

IAD

BKK

23h 35m

1 stop

2:00 am - 3:55 pm

BKK

IAD

25h 55m

1 stop

$929Qatar Airways

Tue, Oct 20 - Wed, Nov 4

12:40 pm - 5:05 am

DCA

BKK

29h 25m

2 stops

7:45 am - 9:48 pm

BKK

DCA

25h 03m

2 stops

$930Air Canada

Mon, Aug 17 - Mon, Aug 31

4:30 pm - 9:45 am

IAD

BKK

30h 15m

2 stops

12:25 pm - 2:30 pm

BKK

IAD

37h 05m

1 stop

$930Multiple Airlines

Sun, Sep 6 - Wed, Sep 16

10:30 am - 6:15 am

IAD

BKK

31h 45m

1 stop

2:00 am - 3:55 pm

BKK

IAD

25h 55m

1 stop

$931Qatar Airways

Wed, Nov 25 - Sun, Dec 6

9:45 pm - 9:45 am

IAD

BKK

25h 00m

1 stop

11:10 pm - 7:25 pm

BKK

IAD

32h 15m

1 stop

$935Turkish Airlines

Tue, Oct 6 - Tue, Feb 2

3:10 pm - 11:55 pm

IAD

BKK

21h 45m

1 stop

9:00 pm - 9:45 am

BKK

IAD

23h 45m

1 stop

$937Etihad Airways

Wed, Aug 19 - Wed, Sep 9

3:10 pm - 11:55 pm

IAD

BKK

21h 45m

1 stop

9:00 pm - 9:45 am

BKK

IAD

23h 45m

1 stop

$938Etihad Airways

Sun, Aug 23 - Wed, Sep 9

6:12 pm - 12:35 pm

BWI

BKK

30h 23m

2 stops

1:45 pm - 6:21 am

BKK

BWI

28h 36m

2 stops

$1,148STARLUX Airlines

Sat, Nov 14 - Sun, Nov 22

10:55 am - 11:10 am

IAD

DMK

37h 15m

1 stop

10:55 pm - 8:10 am

DMK

IAD

45h 15m

1 stop

$1,169Emirates

Tue, Oct 20 - Fri, Jan 29

10:55 am - 12:30 pm

IAD

DMK

38h 35m

1 stop

1:30 pm - 8:40 am

DMK

IAD

30h 10m

1 stop

$1,170Emirates

Wed, Sep 2 - Tue, Sep 8

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

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

Air China

Nov 27

IAD10:00 pmWashington, D.C. Dulles Intl

38h 10m

1 stop

BKK12:10 amBangkok Suvarnabhumi

Dec 10

BKK1:30 amBangkok Suvarnabhumi

29h 00m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$949

Air China

Nov 27

IAD10:00 pmWashington, D.C. Dulles Intl

32h 05m

1 stop

BKK6:05 pmBangkok Suvarnabhumi

Dec 17

BKK7:30 pmBangkok Suvarnabhumi

35h 00m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$950

Air China

Jul 21

BWI3:03 pmBaltimore/Washington

31h 32m

1 stop

BKK9:35 amBangkok Suvarnabhumi

Aug 18

BKK3:45 pmBangkok Suvarnabhumi

35h 50m

1 stop

BWI4:35 pmBaltimore/Washington

$1,379

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 7

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

33h 35m

2 stops

BKK1:35 pmBangkok Suvarnabhumi

Oct 11

BKK9:40 pmBangkok Suvarnabhumi

29h 57m

2 stops

DCA4:37 pmWashington, D.C. Reagan-National

$1,038

Korean Air

Oct 8

DCA7:59 amWashington, D.C. Reagan-National

28h 36m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Oct 19

BKK11:30 pmBangkok Suvarnabhumi

25h 43m

2 stops

DCA2:13 pmWashington, D.C. Reagan-National

$1,086

Korean Air

Oct 1

DCA8:00 amWashington, D.C. Reagan-National

26h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 17

BKK9:40 pmBangkok Suvarnabhumi

27h 33m

2 stops

DCA2:13 pmWashington, D.C. Reagan-National

$1,093

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 10/20

9:00 pm-7:35 am

1 stop23h 35m

Bangkok Suvarnabhumi

Wed 11/4

2:00 am-3:55 pm

1 stop25h 55m

$929

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 8/17

12:40 pm-5:05 am

2 stops29h 25m

Bangkok Suvarnabhumi

Mon 8/31

7:45 am-9:48 pm

2 stops25h 03m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 9/6

4:30 pm-9:45 am

2 stops30h 15m

Bangkok Suvarnabhumi

Wed 9/16

12:25 pm-2:30 pm

1 stop37h 05m

$930

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 11/25

10:30 am-6:15 am

1 stop31h 45m

Bangkok Suvarnabhumi

Sun 12/6

2:00 am-3:55 pm

1 stop25h 55m

$931

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 10/6

9:45 pm-9:45 am

1 stop25h 00m

Bangkok Suvarnabhumi

Tue 2/2

11:10 pm-7:25 pm

1 stop32h 15m

$935

Quickest round-trip

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 8/19

3:10 pm-11:55 pm

1 stop21h 45m

Bangkok Suvarnabhumi

Wed 9/9

9:00 pm-9:45 am

1 stop23h 45m

$937

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 8/23

3:10 pm-11:55 pm

1 stop21h 45m

Bangkok Suvarnabhumi

Wed 9/9

9:00 pm-9:45 am

1 stop23h 45m

$938

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Sat 11/14

6:12 pm-12:35 pm

2 stops30h 23m

Bangkok Suvarnabhumi

Sun 11/22

1:45 pm-6:21 am

2 stops28h 36m

$1,148

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 10/20

10:55 am-11:10 am

1 stop37h 15m

Bangkok Don Mueang Intl

Fri 1/29

10:55 pm-8:10 am

1 stop45h 15m

$1,169

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Wed 9/2

10:55 am-12:30 pm

1 stop38h 35m

Bangkok Don Mueang Intl

Tue 9/8

1:30 pm-8:40 am

1 stop30h 10m

$1,170

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 August, then book flights to Bangkok from Washington, D.C. during September instead. Flights to Bangkok in September, while not as cheap as those in August, still average around $665.

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 $1,085 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 $950 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

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 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 14 as of July 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 China	PriceFrom $732	Free Cancellation	Rating 7.4 157 reviews	Search Air China flights
AIR PREMIA	PriceFrom $784	Free Cancellation	Rating 8.2 100 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $786	Free Cancellation	Rating 7.3 1,475 reviews	Search Etihad Airways flights
Korean Air	PriceFrom $802	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Qatar Airways	PriceFrom $816	Free Cancellation	Rating 7.4 3,745 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 4,442 reviews	Search Turkish Airlines flights
Alaska Airlines	PriceFrom $878	Free Cancellation	Rating 7.9 12,655 reviews	Search Alaska Airlines flights
ANA	PriceFrom $893	Free Cancellation	Rating 8.3 1,271 reviews	Search ANA flights
JetBlue	PriceFrom $900	Free Cancellation	Rating 7.1 3,011 reviews	Search JetBlue flights
United Airlines	PriceFrom $932	Free Cancellation	Rating 7.4 9,981 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

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 8/11

Tue 8/18

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand

Nearby airports

Airlines

Other Thailand destinations

Other flights from Washington, D.C.

Complete your trip

Feeling lucky

Fly into one of these airports located in Bangkok

Bangkok Suvarnabhumi Airport

Bangkok Don Mueang Intl Airport

Cheap flights from Washington, D.C. to Bangkok from $477

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 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Our best Air China 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

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

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

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