How long is the flight from Washington, D.C. to Thailand?

The flight from Washington, D.C. to Thailand depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Washington, D.C. (a popular airport in Washington, D.C.) to Bangkok Suvarnabhumi Airport (the most popular airport in Thailand), then the flight time is 24h 15m on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to Bangkok Suvarnabhumi Airport, then the average flight time is 26h 35m.

What airlines fly to Thailand?

Qatar Airways, Etihad Airways and Korean Air are the top three most popular airlines that fly to Thailand 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 Thailand. Keep in mind that there are 15 different airlines that fly to Thailand 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 Thailand?

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

When did momondo last update prices for flights from Washington, D.C. to Thailand?

Prices for flights from Washington, D.C. to Thailand are updated daily.

How many operators does momondo search for flights from Washington, D.C. to Thailand?

The number of operators available for flights from Washington, D.C. to Thailand is 15 as of September 2026.

How old do you have to be to fly from Washington, D.C. to Thailand?

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 Thailand.

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

The travel and health documents you'll need for your trip to Thailand 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 Thailand. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$393 Cheap Flights from Washington, D.C. to Thailand in 2026/27

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:50 am - 10:45 pmIAD Washington, D.C. Dulles Intl-CNX Chiang Mai

22h 55m1 stop Incheon Intl

9:10 am - 9:05 amCNX Chiang Mai-IAD Washington, D.C. Dulles Intl

35h 55m1 stop Abu Dhabi Zayed Intl

$826Multiple Airlines

Tue, Nov 3 - Tue, Nov 10

11:50 am - 10:45 pmIAD Washington, D.C. Dulles Intl-CNX Chiang Mai

22h 55m1 stop Incheon Intl

9:10 am - 9:05 amCNX Chiang Mai-IAD Washington, D.C. Dulles Intl

35h 55m1 stop Abu Dhabi Zayed Intl

$851Multiple Airlines

Wed, Nov 4 - Tue, Nov 10

11:50 am - 10:45 pmIAD Washington, D.C. Dulles Intl-CNX Chiang Mai

22h 55m1 stop Incheon Intl

12:20 am - 1:54 pmCNX Chiang Mai-IAD Washington, D.C. Dulles Intl

25h 34m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$866Korean Air

Tue, Nov 3 - Mon, Nov 9

11:50 am - 10:45 pmIAD Washington, D.C. Dulles Intl-CNX Chiang Mai

22h 55m1 stop Incheon Intl

12:20 am - 9:50 amCNX Chiang Mai-IAD Washington, D.C. Dulles Intl

21h 30m1 stop Incheon Intl

$881Korean Air

Wed, Nov 4 - Tue, Nov 10

3:10 pm - 11:50 pmIAD Washington, D.C. Dulles Intl-HKT Phuket City

21h 40m1 stop Abu Dhabi Zayed Intl

9:00 pm - 10:05 amHKT Phuket City-IAD Washington, D.C. Dulles Intl

24h 05m1 stop Abu Dhabi Zayed Intl

$896Etihad Airways

Wed, Oct 21 - Wed, Oct 28

2:35 pm - 5:50 pmIAD Washington, D.C. Dulles Intl-HKT Phuket City

39h 15m1 stop Abu Dhabi Zayed Intl

9:00 pm - 9:05 amHKT Phuket City-IAD Washington, D.C. Dulles Intl

24h 05m1 stop Abu Dhabi Zayed Intl

$896Etihad Airways

Thu, Nov 5 - Thu, Nov 12

8:05 pm - 7:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 20m1 stop Doha Hamad Intl

2:00 am - 3:55 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 55m1 stop Doha Hamad Intl

$897Qatar Airways

Mon, Feb 15 - Sun, Feb 28

9:00 pm - 3:20 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

31h 20m1 stop Doha Hamad Intl

8:00 pm - 8:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Doha Hamad Intl

$898Qatar Airways

Sun, Oct 4 - Fri, Oct 16

8:05 pm - 6:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 10m1 stop Doha Hamad Intl

8:00 pm - 8:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Doha Hamad Intl

$911JetBlue

Tue, Feb 2 - Fri, Jul 9

11:05 am - 2:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

40h 20m1 stop Doha Hamad Intl

8:00 pm - 8:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Doha Hamad Intl

$918JetBlue

Thu, Oct 8 - Wed, Oct 21

Cheap last minute flights

Enter your travel dates to find the best prices.

3:10 pm - 12:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

34h 00m1 stop Abu Dhabi Zayed Intl

3:55 pm - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

28h 50m1 stop Abu Dhabi Zayed Intl

$896Etihad Airways

Fri, Sep 25 - Sat, Oct 3

3:10 pm - 6:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

40h 00m1 stop Abu Dhabi Zayed Intl

9:00 pm - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Abu Dhabi Zayed Intl

$896Etihad Airways

Sat, Sep 26 - Sun, Oct 4

9:00 pm - 6:20 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 20m1 stop Doha Hamad Intl

10:55 pm - 9:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

$900Multiple Airlines

Sun, Sep 27 - Thu, Oct 29

8:08 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 27m2 stops Atlanta Hartsfield-Jackson Incheon Intl

11:30 pm - 11:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

22h 35m1 stop Incheon Intl

$916Korean Air

Fri, Sep 25 - Sun, Oct 4

8:08 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 27m2 stops Atlanta Hartsfield-Jackson Incheon Intl

9:40 pm - 10:50 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Incheon Intl

$916Korean Air

Thu, Sep 24 - Thu, Oct 29

7:00 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 35m2 stops Salt Lake City Incheon Intl

2:35 am - 8:14 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

28h 39m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$922Delta

Sat, Sep 26 - Fri, Oct 2

7:25 am - 1:05 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

30h 40m2 stops Seattle/Tacoma Intl Incheon Intl

2:35 am - 12:41 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 06m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$922Delta

Fri, Sep 25 - Sat, Oct 3

3:10 pm - 12:55 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 45m1 stop Abu Dhabi Zayed Intl

6:45 pm - 10:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

50h 20m2 stops Krabi Abu Dhabi Zayed Intl

$944Multiple Airlines

Mon, Sep 28 - Mon, Oct 26

9:00 pm - 2:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

30h 25m1 stop Doha Hamad Intl

8:00 pm - 5:55 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

32h 55m1 stop Doha Hamad Intl

$974Qatar Airways

Sun, Sep 27 - Tue, Oct 6

9:00 pm - 6:20 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 20m1 stop Doha Hamad Intl

2:00 am - 5:55 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Doha Hamad Intl

$974Qatar Airways

Sun, Sep 27 - Mon, Oct 5

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

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

Qatar Airways

Oct 4

IAD9:00 pmWashington, D.C. Dulles Intl

31h 20m

1 stop

BKK3:20 pmBangkok Suvarnabhumi

Oct 16

BKK8:00 pmBangkok Suvarnabhumi

23h 45m

1 stop

IAD8:45 amWashington, D.C. Dulles Intl

$898

Qatar Airways

Nov 26

IAD8:05 pmWashington, D.C. Dulles Intl

34h 45m

1 stop

BKK6:50 pmBangkok Suvarnabhumi

Dec 15

BKK8:15 amBangkok Suvarnabhumi

36h 15m

1 stop

IAD8:30 amWashington, D.C. Dulles Intl

$899

Qatar Airways

Oct 8

IAD11:05 amWashington, D.C. Dulles Intl

40h 20m

1 stop

BKK2:25 pmBangkok Suvarnabhumi

Oct 21

BKK8:00 pmBangkok Suvarnabhumi

23h 45m

1 stop

IAD8:45 amWashington, D.C. Dulles Intl

$900

United Airlines flights from Washington, D.C. to Thailand

Our best United Airlines deals on Washington, D.C. to Thailand flight tickets

United Airlines

Oct 26

DCA11:49 amWashington, D.C. Reagan-National

30h 21m

2 stops

BKK5:10 amBangkok Suvarnabhumi

Nov 18

BKK9:10 amBangkok Suvarnabhumi

24h 01m

2 stops

DCA9:11 pmWashington, D.C. Reagan-National

$1,058

United Airlines

Oct 5

DCA9:30 amWashington, D.C. Reagan-National

32h 05m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Oct 8

BKK7:00 amBangkok Suvarnabhumi

25h 59m

2 stops

DCA9:59 pmWashington, D.C. Reagan-National

$1,059

United Airlines

Sep 30

DCA6:00 amWashington, D.C. Reagan-National

30h 55m

2 stops

BKK11:55 pmBangkok Suvarnabhumi

Oct 6

BKK7:00 amBangkok Suvarnabhumi

24h 08m

2 stops

DCA8:08 pmWashington, D.C. Reagan-National

$1,062

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Chiang Mai

IAD Washington, D.C. Dulles Intl - CNX Chiang Mai

IADCNX

Washington, D.C. Dulles Intl

Tue 11/3

11:50 am-10:45 pm

1 stop22h 55m

Chiang Mai

Tue 11/10

9:10 am-9:05 am

1 stop35h 55m

$826

Washington, D.C.Chiang Mai

IAD Washington, D.C. Dulles Intl - CNX Chiang Mai

IADCNX

Washington, D.C. Dulles Intl

Wed 11/4

11:50 am-10:45 pm

1 stop22h 55m

Chiang Mai

Tue 11/10

9:10 am-9:05 am

1 stop35h 55m

$851

Washington, D.C.Chiang Mai

IAD Washington, D.C. Dulles Intl - CNX Chiang Mai

IADCNX

Washington, D.C. Dulles Intl

Tue 11/3

11:50 am-10:45 pm

1 stop22h 55m

Chiang Mai

Mon 11/9

12:20 am-1:54 pm

2 stops25h 34m

$866

Quickest round-trip

Washington, D.C.Chiang Mai

IAD Washington, D.C. Dulles Intl - CNX Chiang Mai

IADCNX

Washington, D.C. Dulles Intl

Wed 11/4

11:50 am-10:45 pm

1 stop22h 55m

Chiang Mai

Tue 11/10

12:20 am-9:50 am

1 stop21h 30m

$881

Washington, D.C.Phuket City

IAD Washington, D.C. Dulles Intl - HKT Phuket City

IADHKT

Washington, D.C. Dulles Intl

Wed 10/21

3:10 pm-11:50 pm

1 stop21h 40m

Phuket City

Wed 10/28

9:00 pm-10:05 am

1 stop24h 05m

$896

Washington, D.C.Phuket City

IAD Washington, D.C. Dulles Intl - HKT Phuket City

IADHKT

Washington, D.C. Dulles Intl

Thu 11/5

2:35 pm-5:50 pm

1 stop39h 15m

Phuket City

Thu 11/12

9:00 pm-9:05 am

1 stop24h 05m

$896

Washington, D.C.Bangkok

IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi

IADBKK

Washington, D.C. Dulles Intl

Mon 2/15

8:05 pm-7:25 pm

1 stop35h 20m

Bangkok Suvarnabhumi

Sun 2/28

2:00 am-3:55 pm

1 stop25h 55m

$897

Washington, D.C.Bangkok

IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi

IADBKK

Washington, D.C. Dulles Intl

Sun 10/4

9:00 pm-3:20 pm

1 stop31h 20m

Bangkok Suvarnabhumi

Fri 10/16

8:00 pm-8:45 am

1 stop23h 45m

$898

Washington, D.C.Bangkok

IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi

IADBKK

Washington, D.C. Dulles Intl

Tue 2/2

8:05 pm-6:15 am

1 stop22h 10m

Bangkok Suvarnabhumi

Fri 7/9

8:00 pm-8:45 am

1 stop23h 45m

$911

Washington, D.C.Bangkok

IAD Washington, D.C. Dulles Intl - BKK Bangkok Suvarnabhumi

IADBKK

Washington, D.C. Dulles Intl

Thu 10/8

11:05 am-2:25 pm

1 stop40h 20m

Bangkok Suvarnabhumi

Wed 10/21

8:00 pm-8:45 am

1 stop23h 45m

$918

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 Thailand

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 cheapest month to fly to Thailand?

The month of September is, on average, the cheapest month to fly to Thailand from Washington, D.C., with most prices found around $953. If you are unable to visit Thailand during the month of September, then departing from Washington, D.C. during the month October is also very affordable. Most momondo users find prices during this month for around $997.

How far in advance should I book a flight from Washington, D.C. to Thailand?

You are more likely to see cheaper flights to Thailand from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $1,118 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Thailand from Washington, D.C. for as low as $997 on momondo.

Can stopping save me money on Washington, D.C. to Thailand flights?

You could potentially save up to 13% on your flight if you consider stops on a Washington, D.C. to Thailand flight.

Cheap Washington, D.C. to Thailand flight deals and tips

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

Best Price Found	$393
Fastest flight time	20h 05m
Direct flights	None

The best one-way flight to Thailand from Washington, D.C. in the past 72 hours is $393. The best round-trip flight deal from Washington, D.C. to Thailand found on momondo in the last 72 hours is $826.

The fastest flight from Washington, D.C. to Thailand takes 20h 05m

There are no direct flights from Washington, D.C. to Thailand. There are no popular flight routes from Washington, D.C. to Thailand.

Search flight deals

Frequently asked questions about flying from Washington, D.C. to Thailand

When did momondo last update prices for flights from Washington, D.C. to Thailand?
Prices for flights from Washington, D.C. to Thailand are updated daily.
How many operators does momondo search for flights from Washington, D.C. to Thailand?
The number of operators available for flights from Washington, D.C. to Thailand is 15 as of September 2026.
How old do you have to be to fly from Washington, D.C. to Thailand?
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 Thailand.
What documentation or ID do you need to fly to Thailand?
The travel and health documents you'll need for your trip to Thailand 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 Thailand. 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 Thailand

Compare and see reviews for airlines that fly from Washington, D.C. to Thailand with momondo

Airline	Rating	Free Cancellation	Price
Korean Air	PriceFrom $754	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
AIR PREMIA	PriceFrom $784	Free Cancellation	Rating 8.1 106 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $786	Free Cancellation	Rating 7.3 1,533 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $813	Free Cancellation	Rating 7.3 3,732 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 4,461 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $845	Free Cancellation	Rating 7.1 11,668 reviews	Search Air Canada flights
Alaska Airlines	PriceFrom $878	Free Cancellation	Rating 7.9 12,959 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $900	Free Cancellation	Rating 7.1 3,037 reviews	Search JetBlue flights
United Airlines	PriceFrom $935	Free Cancellation	Rating 7.4 10,226 reviews	Search United Airlines flights
ANA	PriceFrom $945	Free Cancellation	Rating 8.3 1,319 reviews	Search ANA flights

Why use momondo?

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

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 Thailand for you.

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

All flight searches from Washington, D.C. to Thailand 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 Thailand?

momondo helps you find the best flight between Washington, D.C. and Thailand 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 Thailand right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Thailand now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Thailand and let you know when they change.