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

United Airlines, Delta, and Emirates are the most popular carriers operating from Washington, D.C. Dulles Intl to Bangkok

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. Dulles Intl Airport 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.

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

As of July 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Bangkok.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Bangkok.

What documentation or ID do you need to fly to Bangkok?

The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$505 Cheap Flights from Washington, D.C. Dulles Intl Airport to Bangkok in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Bangkok?

Prices are currently low for flights on this route. Typical prices usually range from $955 to $1,336. 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. Dulles Intl Airport 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

9:00 pm - 6:20 am

IAD

BKK

22h 20m

1 stop

2:30 am - 3:40 pm

BKK

IAD

24h 10m

1 stop

$931Qatar Airways

Mon, Sep 21 - Sun, Oct 4

8:05 pm - 1:05 pm

IAD

BKK

29h 00m

1 stop

2:00 am - 3:55 pm

BKK

IAD

25h 55m

1 stop

$932Qatar Airways

Mon, Nov 9 - Tue, Nov 17

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

9:00 pm - 7:35 am

IAD

BKK

23h 35m

1 stop

2:00 am - 3:55 pm

BKK

IAD

25h 55m

1 stop

$936Qatar Airways

Wed, Oct 14 - Thu, Feb 4

3:10 pm - 6:10 pm

IAD

BKK

40h 00m

1 stop

9:00 pm - 9:45 am

BKK

IAD

23h 45m

1 stop

$945Etihad Airways

Tue, Aug 25 - Tue, Sep 8

2:35 pm - 6:35 am

IAD

BKK

28h 00m

1 stop

2:40 pm - 9:05 am

BKK

IAD

30h 25m

1 stop

$949Etihad Airways

Mon, Nov 23 - Mon, Dec 14

10:00 pm - 12:10 am

IAD

BKK

38h 10m

1 stop

1:30 am - 6:30 pm

BKK

IAD

29h 00m

1 stop

$950Air China

Fri, Nov 27 - Thu, Dec 10

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

Wed, Oct 14 - Wed, Nov 11

10:55 am - 11:25 am

IAD

DMK

37h 30m

1 stop

11:50 pm - 8:40 am

DMK

IAD

43h 50m

1 stop

$1,170Emirates

Tue, Sep 1 - Wed, Sep 30

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

Qatar Airways flights from Washington, D.C. Dulles Intl Airport to Bangkok

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

Qatar Airways

Oct 15

IAD9:00 pmWashington, D.C. Dulles Intl

28h 55m

1 stop

BKK12:55 pmBangkok Suvarnabhumi

Oct 29

BKK2:00 amBangkok Suvarnabhumi

25h 55m

1 stop

IAD4:55 pmWashington, D.C. Dulles Intl

$929

Qatar Airways

Sep 21

IAD9:00 pmWashington, D.C. Dulles Intl

22h 20m

1 stop

BKK6:20 amBangkok Suvarnabhumi

Oct 4

BKK2:30 amBangkok Suvarnabhumi

24h 10m

1 stop

IAD3:40 pmWashington, D.C. Dulles Intl

$931

Qatar Airways

Nov 9

IAD8:05 pmWashington, D.C. Dulles Intl

29h 00m

1 stop

BKK1:05 pmBangkok Suvarnabhumi

Nov 17

BKK2:00 amBangkok Suvarnabhumi

25h 55m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$932

Etihad Airways flights from Washington, D.C. Dulles Intl Airport to Bangkok

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

Etihad Airways

Aug 25

IAD3:10 pmWashington, D.C. Dulles Intl

40h 00m

1 stop

BKK6:10 pmBangkok Suvarnabhumi

Sep 8

BKK9:00 pmBangkok Suvarnabhumi

23h 45m

1 stop

IAD9:45 amWashington, D.C. Dulles Intl

$945

Etihad Airways

Nov 23

IAD2:35 pmWashington, D.C. Dulles Intl

28h 00m

1 stop

BKK6:35 amBangkok Suvarnabhumi

Dec 14

BKK2:40 pmBangkok Suvarnabhumi

30h 25m

1 stop

IAD9:05 amWashington, D.C. Dulles Intl

$949

Etihad Airways

Aug 23

IAD3:10 pmWashington, D.C. Dulles Intl

21h 45m

1 stop

BKK11:55 pmBangkok Suvarnabhumi

Oct 5

BKK3:55 pmBangkok Suvarnabhumi

28h 50m

1 stop

IAD9:45 amWashington, D.C. Dulles Intl

$955

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Bangkok that are best for you.

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

Quickest round-trip

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 9/21

9:00 pm-6:20 am

1 stop22h 20m

Bangkok Suvarnabhumi

Sun 10/4

2:30 am-3:40 pm

1 stop24h 10m

$931

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 11/9

8:05 pm-1:05 pm

1 stop29h 00m

Bangkok Suvarnabhumi

Tue 11/17

2:00 am-3:55 pm

1 stop25h 55m

$932

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

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 10/14

9:00 pm-7:35 am

1 stop23h 35m

Bangkok Suvarnabhumi

Thu 2/4

2:00 am-3:55 pm

1 stop25h 55m

$936

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 8/25

3:10 pm-6:10 pm

1 stop40h 00m

Bangkok Suvarnabhumi

Tue 9/8

9:00 pm-9:45 am

1 stop23h 45m

$945

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 11/23

2:35 pm-6:35 am

1 stop28h 00m

Bangkok Suvarnabhumi

Mon 12/14

2:40 pm-9:05 am

1 stop30h 25m

$949

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Fri 11/27

10:00 pm-12:10 am

1 stop38h 10m

Bangkok Suvarnabhumi

Thu 12/10

1:30 am-6:30 pm

1 stop29h 00m

$950

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Wed 10/14

10:55 am-11:10 am

1 stop37h 15m

Bangkok Don Mueang Intl

Wed 11/11

10:55 pm-8:10 am

1 stop45h 15m

$1,169

Washington, D.C.Bangkok

IAD - DMK

IADDMK

Washington, D.C. Dulles Intl

Tue 9/1

10:55 am-11:25 am

1 stop37h 30m

Bangkok Don Mueang Intl

Wed 9/30

11:50 pm-8:40 am

1 stop43h 50m

$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. Dulles Intl Airport 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

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport during April instead. Flights to Bangkok in April, while not as cheap as those in September, still average around $730.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Bangkok?

You are more likely to see cheaper flights to Bangkok from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport for as low as $950 on momondo.

Cheap Washington, D.C. Dulles Intl Airport to Bangkok flight deals and tips

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

Fastest flight time	21h 45m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Bangkok takes 21h 45m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Bangkok. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Bangkok.

Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Bangkok

How far is Washington, D.C. Dulles Intl to Bangkok by plane?
There are 8786.6 mi between Washington, D.C. Dulles Intl and Bangkok. A reasonable flight in good conditions will take 21h 45m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Bangkok?
Prices for flights from Washington, D.C. Dulles Intl Airport to Bangkok are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Bangkok?
As of July 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Bangkok.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Bangkok?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Washington, D.C. Dulles Intl Airport to Bangkok

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Bangkok with momondo

Airline	Rating	Free Cancellation	Price
Air China	PriceFrom $732	Free Cancellation	Rating 7.3 158 reviews	Search Air China flights
AIR PREMIA	PriceFrom $784	Free Cancellation	Rating 8.2 99 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $786	Free Cancellation	Rating 7.3 1,477 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $816	Free Cancellation	Rating 7.3 3,742 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 4,441 reviews	Search Turkish Airlines flights
Korean Air	PriceFrom $865	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Alaska Airlines	PriceFrom $878	Free Cancellation	Rating 7.9 12,641 reviews	Search Alaska Airlines flights
ANA	PriceFrom $896	Free Cancellation	Rating 8.3 1,269 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 9,955 reviews	Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Bangkok for you.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Bangkok flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and Bangkok by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 simply researching potential flights to Bangkok, momondo offers a useful price alert feature which will track prices for flights to Bangkok from Washington, D.C. and alert you 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

Fri 8/7

Fri 8/14

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. Dulles Intl Airport

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. Dulles Intl Airport to Bangkok from $533

Find the cheapest flights from Washington, D.C. Dulles Intl Airport 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

Qatar Airways flights from Washington, D.C. Dulles Intl Airport to Bangkok

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

Etihad Airways flights from Washington, D.C. Dulles Intl Airport to Bangkok

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

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Bangkok that are best for you.

See travel insights to Bangkok from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Bangkok

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Bangkok?

What is the cheapest month to fly to Bangkok?

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Bangkok?

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

What airlines fly to Bangkok?

Cheap Washington, D.C. Dulles Intl Airport to Bangkok flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Bangkok

Best airlines flying from Washington, D.C. Dulles Intl Airport to Bangkok

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport

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