What airlines fly to Washington, D.C.?

Korean Air, ANA and Qatar Airways are the top three most popular airlines that fly to Washington, D.C. from Thailand according to our data. Korean Air is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Washington, D.C.?

Flight times from Thailand to Washington, D.C. vary, but if you’re flying out of Bangkok and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 25h 21m on average. Another popular route from Thailand to Washington, D.C. is flying from Chiang Mai to Washington, D.C. Dulles Intl Airport, which will take roughly 30h 58m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

As of August 2025, there are 6 operators available to choose from for flights from Thailand to Washington, D.C..

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$460 Cheap Flights from Thailand to Washington, D.C. in 2025

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Thailand to Washington, D.C.

11:20 pm - 11:27 pmBKK-BWI

35h 07m3 stops

5:35 am - 10:25 pmBWI-BKK

29h 50m2 stops

$971

Find Deal

Sat, Oct 4 - Sat, Oct 11

1:30 pm - 9:58 amBKK-BWI

31h 28m3 stops

5:35 am - 10:25 pmBWI-BKK

29h 50m2 stops

$995

Find Deal

Thu, Oct 2 - Sat, Oct 18

9:35 pm - 1:49 pmBKK-IAD

27h 14m2 stops

12:10 pm - 6:30 amIAD-BKK

31h 20m1 stop

$1,063ANA

Find Deal

Thu, Sep 4 - Wed, Oct 29

7:00 am - 8:55 pmBKK-IAD

24h 55m2 stops

12:15 pm - 6:00 amIAD-BKK

30h 45m1 stop

$1,070ANA

Find Deal

Fri, Oct 3 - Sun, Oct 19

8:00 pm - 3:40 pmBKK-IAD

30h 40m1 stop

9:05 pm - 1:05 pmIAD-BKK

29h 00m1 stop

$1,144Qatar Airways

Find Deal

Thu, Sep 4 - Wed, Oct 29

2:30 am - 3:40 pmBKK-IAD

24h 10m1 stop

9:05 pm - 1:05 pmIAD-BKK

29h 00m1 stop

$1,145Qatar Airways

Find Deal

Wed, Sep 3 - Wed, Oct 29

11:30 pm - 10:55 amBKK-IAD

22h 25m1 stop

1:15 pm - 1:05 amIAD-BKK

24h 50m1 stop

$1,216Korean Air

Find Deal

Wed, Sep 3 - Wed, Sep 17

12:15 am - 12:07 amCNX-IAD

35h 52m2 stops

7:00 am - 11:05 pmIAD-CNX

28h 05m2 stops

$1,220Delta

Find Deal

Wed, Nov 19 - Sat, Nov 29

11:15 pm - 4:33 pmCNX-DCA

28h 18m2 stops

6:00 am - 11:05 pmDCA-CNX

29h 05m2 stops

$1,220Delta

Find Deal

Wed, Sep 3 - Mon, Dec 8

12:15 am - 9:50 amCNX-IAD

21h 35m1 stop

11:50 am - 11:05 pmIAD-CNX

23h 15m1 stop

$1,372Korean Air

Find Deal

Thu, Nov 20 - Mon, Dec 1

Delta flights from Thailand to Washington, D.C.

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

Delta

Sep 1

BKK2:35 amBangkok Suvarnabhumi

31h 46m

2 stops

IAD11:21 pmWashington, D.C. Dulles Intl

Sep 16

IAD6:00 amWashington, D.C. Dulles Intl

30h 25m

2 stops

BKK11:25 pmBangkok Suvarnabhumi

$1,219

Find similar

Delta

Nov 19

CNX12:15 amChiang Mai

35h 52m

2 stops

IAD12:07 amWashington, D.C. Dulles Intl

Nov 29

IAD7:00 amWashington, D.C. Dulles Intl

28h 05m

2 stops

CNX11:05 pmChiang Mai

$1,220

Find similar

Delta

Sep 3

CNX11:15 pmChiang Mai

22h 40m

1 stop

IAD10:55 amWashington, D.C. Dulles Intl

Dec 8

IAD7:20 amWashington, D.C. Dulles Intl

27h 45m

2 stops

CNX11:05 pmChiang Mai

$1,322

Find similar

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

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

Air China

Dec 22

BKK7:30 pmBangkok Suvarnabhumi

35h 00m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

Jan 2

IAD10:00 pmWashington, D.C. Dulles Intl

32h 05m

1 stop

BKK6:05 pmBangkok Suvarnabhumi

$1,118

Find similar

Air China

Dec 22

BKK7:30 pmBangkok Suvarnabhumi

35h 00m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

Jan 2

IAD10:00 pmWashington, D.C. Dulles Intl

32h 05m

1 stop

BKK6:05 pmBangkok Suvarnabhumi

$1,119

Find similar

Air China

Nov 20

CNX11:05 pmChiang Mai

31h 25m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

Nov 28

IAD10:00 pmWashington, D.C. Dulles Intl

35h 50m

1 stop

CNX9:50 pmChiang Mai

$1,175

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Sat 10/4

11:20 pm-11:27 pm

3 stops35h 07m

Baltimore/Washington

Sat 10/11

5:35 am-10:25 pm

2 stops29h 50m

$971

BangkokBaltimore

BKK - BWI

BKKBWI

Bangkok Suvarnabhumi

Thu 10/2

1:30 pm-9:58 am

3 stops31h 28m

Baltimore/Washington

Sat 10/18

5:35 am-10:25 pm

2 stops29h 50m

$995

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 9/4

9:35 pm-1:49 pm

2 stops27h 14m

Washington, D.C. Dulles Intl

Wed 10/29

12:10 pm-6:30 am

1 stop31h 20m

$1,063

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Fri 10/3

7:00 am-8:55 pm

2 stops24h 55m

Washington, D.C. Dulles Intl

Sun 10/19

12:15 pm-6:00 am

1 stop30h 45m

$1,070

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Thu 9/4

8:00 pm-3:40 pm

1 stop30h 40m

Washington, D.C. Dulles Intl

Wed 10/29

9:05 pm-1:05 pm

1 stop29h 00m

$1,144

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 9/3

2:30 am-3:40 pm

1 stop24h 10m

Washington, D.C. Dulles Intl

Wed 10/29

9:05 pm-1:05 pm

1 stop29h 00m

$1,145

BangkokWashington, D.C.

BKK - IAD

BKKIAD

Bangkok Suvarnabhumi

Wed 9/3

11:30 pm-10:55 am

1 stop22h 25m

Washington, D.C. Dulles Intl

Wed 9/17

1:15 pm-1:05 am

1 stop24h 50m

$1,216

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Wed 11/19

12:15 am-12:07 am

2 stops35h 52m

Washington, D.C. Dulles Intl

Sat 11/29

7:00 am-11:05 pm

2 stops28h 05m

$1,220

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Wed 9/3

11:15 pm-4:33 pm

2 stops28h 18m

Washington, D.C. Reagan-National

Mon 12/8

6:00 am-11:05 pm

2 stops29h 05m

$1,220

Chiang MaiWashington, D.C.

CNX - IAD

CNXIAD

Chiang Mai

Thu 11/20

12:15 am-9:50 am

1 stop21h 35m

Washington, D.C. Dulles Intl

Mon 12/1

11:50 am-11:05 pm

1 stop23h 15m

$1,372

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 Thailand to Washington, D.C.

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 Washington, D.C.?

The month of July is, on average, the cheapest month to fly to Washington, D.C. from Thailand, with most prices found around $1,063. If you’re not able to fly to Washington, D.C. in July, then January is your next best option. Flight prices from Thailand to Washington, D.C. during January average around $1,087.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Thailand is on a Sunday. momondo users have found tickets for Sunday departures for as low as $1,114. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Thailand to Washington, D.C. for around $1,287.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the morning is the cheapest time of day to fly from Thailand to Washington, D.C. when you can find flight prices for as low as $1,121. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $1,279. 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 Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from Thailand when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $1,215 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Thailand for as low as $1,092 on momondo.

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

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Thailand to Washington, D.C.?
Prices for flights from Thailand to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Thailand to Washington, D.C.?
As of August 2025, there are 6 operators available to choose from for flights from Thailand to Washington, D.C..
How old do you have to be to fly from Thailand to Washington, D.C.?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Thailand to Washington, D.C.

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $992	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights
ANA	PriceFrom $1,015	Free Cancellation	Rating 8.4 938 reviews	Search ANA flights
Korean Air	PriceFrom $1,043	Free Cancellation	Rating 8.4 1,131 reviews	Search Korean Air flights
Qatar Airways	PriceFrom $1,142	Free Cancellation	Rating 7.4 3,615 reviews	Search Qatar Airways flights
Emirates	PriceFrom $1,371	Free Cancellation	Rating 8.1 3,317 reviews	Search Emirates flights
American Airlines	PriceFrom $1,401	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Alexandria

Gettysburg

Arlington

National Harbor

Woodbridge

Waldorf

Tysons

Silver Spring

Laurel

Colonial Beach

Fredericksburg

Manassas

Towson

Rockville

Gaithersburg

Reston

Fairfax

Glen Burnie

Springfield

Linthicum Heights

Why use momondo?

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

Finding the right flight to Washington, D.C. from Thailand is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Washington, D.C. from Thailand which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Thailand to Washington, D.C. 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 Thailand to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Thailand to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.