How long does it take to fly to Washington, D.C. Reagan-National Airport?

Flight times from Thailand to Washington, D.C. Reagan-National Airport vary, but if you’re flying out of Chiang Mai and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 21h 55m on average. Another popular route from Thailand to Washington, D.C. Reagan-National Airport is flying from Bangkok to Washington, D.C. Dulles Intl Airport, which will take roughly 26h 37m. Keep in mind that layovers or delays could extend your travel time.

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

The number of operators available for flights from Thailand to Washington, D.C. Reagan-National Airport is 1 as of July 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Thailand to Washington, D.C. Reagan-National Airport.

What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$624 Cheap Flights from Thailand to Washington, D.C. Reagan-National Airport in 2026

Discover deals from 900+ travel sites with momondo.

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.

Enter your travel dates to find the best prices.

7:45 am - 9:50 pm

BKK

DCA

25h 05m

2 stops

9:40 am - 5:05 am

DCA

BKK

32h 25m

2 stops

$1,063Air Canada

Thu, Sep 17 - Mon, Sep 21

9:35 am - 10:30 pm

BKK

DCA

47h 55m

2 stops

7:10 pm - 4:35 am

DCA

BKK

46h 25m

2 stops

$1,112United Airlines

Tue, Sep 29 - Sat, Oct 3

7:00 am - 11:54 am

BKK

DCA

39h 54m

2 stops

3:30 pm - 4:35 am

DCA

BKK

26h 05m

2 stops

$1,114United Airlines

Thu, Aug 27 - Fri, Aug 28

9:35 am - 10:30 pm

BKK

DCA

47h 55m

2 stops

7:10 pm - 4:35 am

DCA

BKK

46h 25m

2 stops

$1,115United Airlines

Tue, Sep 29 - Sat, Oct 3

9:35 am - 10:30 pm

BKK

DCA

47h 55m

2 stops

7:10 pm - 4:35 am

DCA

BKK

46h 25m

2 stops

$1,118United Airlines

Tue, Sep 29 - Sat, Oct 3

3:45 pm - 3:42 pm

BKK

DCA

34h 57m

3 stops

1:04 pm - 4:35 am

DCA

BKK

52h 31m

3 stops

$1,128United Airlines

Tue, Aug 18 - Tue, Aug 25

7:45 am - 9:50 pm

BKK

DCA

25h 05m

2 stops

9:40 am - 5:05 am

DCA

BKK

32h 25m

2 stops

$1,163Air Canada

Thu, Sep 17 - Mon, Sep 21

1:35 am - 8:00 pm

BKK

DCA

29h 25m

2 stops

9:30 am - 10:50 am

DCA

BKK

38h 20m

2 stops

$1,211Multiple Airlines

Mon, Aug 17 - Tue, Aug 25

12:15 am - 6:05 pm

CNX

DCA

29h 50m

2 stops

8:50 pm - 10:55 pm

DCA

CNX

38h 05m

2 stops

$1,567Korean Air

Tue, Nov 3 - Sun, Nov 8

12:15 am - 2:54 pm

CNX

DCA

50h 39m

2 stops

6:05 am - 10:55 pm

DCA

CNX

28h 50m

2 stops

$1,571Korean Air

Tue, Nov 3 - Sun, Nov 8

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United Airlines flights from Thailand to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on Thailand to Washington, D.C. Reagan-National Airport flight tickets

United Airlines

Jul 12

BKK7:00 amBangkok Suvarnabhumi

26h 30m

2 stops

DCA10:30 pmWashington, D.C. Reagan-National

Jul 19

DCA6:10 pmWashington, D.C. Reagan-National

28h 25m

3 stops

BKK9:35 amBangkok Suvarnabhumi

$1,112

United Airlines

Jul 12

BKK7:00 amBangkok Suvarnabhumi

26h 30m

2 stops

DCA10:30 pmWashington, D.C. Reagan-National

Jul 19

DCA1:00 pmWashington, D.C. Reagan-National

28h 35m

2 stops

BKK4:35 amBangkok Suvarnabhumi

$1,113

United Airlines

Aug 27

BKK7:00 amBangkok Suvarnabhumi

39h 54m

2 stops

DCA11:54 amWashington, D.C. Reagan-National

Aug 28

DCA3:30 pmWashington, D.C. Reagan-National

26h 05m

2 stops

BKK4:35 amBangkok Suvarnabhumi

$1,114

Japan Airlines flights from Thailand to Washington, D.C. Reagan-National Airport

Our best Japan Airlines deals on Thailand to Washington, D.C. Reagan-National Airport flight tickets

Japan Airlines

Aug 3

BKK9:40 pmBangkok Suvarnabhumi

36h 51m

2 stops

DCA11:31 pmWashington, D.C. Reagan-National

Aug 10

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

36h 45m

2 stops

BKK5:45 amBangkok Suvarnabhumi

$1,448

Japan Airlines

Aug 30

BKK9:40 pmBangkok Suvarnabhumi

29h 49m

2 stops

DCA4:29 pmWashington, D.C. Reagan-National

Sep 8

DCA6:23 pmWashington, D.C. Reagan-National

33h 47m

2 stops

BKK3:10 pmBangkok Suvarnabhumi

$1,514

Japan Airlines

Jul 31

BKK7:55 amBangkok Suvarnabhumi

25h 49m

2 stops

DCA10:44 pmWashington, D.C. Reagan-National

Aug 10

DCA9:00 amWashington, D.C. Reagan-National

33h 45m

2 stops

BKK5:45 amBangkok Suvarnabhumi

$2,242

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 9/17

7:45 am-9:50 pm

2 stops25h 05m

Washington, D.C. Reagan-National

Mon 9/21

9:40 am-5:05 am

2 stops32h 25m

$1,063

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 9/29

9:35 am-10:30 pm

2 stops47h 55m

Washington, D.C. Reagan-National

Sat 10/3

7:10 pm-4:35 am

2 stops46h 25m

$1,112

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 8/27

7:00 am-11:54 am

2 stops39h 54m

Washington, D.C. Reagan-National

Fri 8/28

3:30 pm-4:35 am

2 stops26h 05m

$1,114

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 9/29

9:35 am-10:30 pm

2 stops47h 55m

Washington, D.C. Reagan-National

Sat 10/3

7:10 pm-4:35 am

2 stops46h 25m

$1,115

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 9/29

9:35 am-10:30 pm

2 stops47h 55m

Washington, D.C. Reagan-National

Sat 10/3

7:10 pm-4:35 am

2 stops46h 25m

$1,118

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Tue 8/18

3:45 pm-3:42 pm

3 stops34h 57m

Washington, D.C. Reagan-National

Tue 8/25

1:04 pm-4:35 am

3 stops52h 31m

$1,128

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Thu 9/17

7:45 am-9:50 pm

2 stops25h 05m

Washington, D.C. Reagan-National

Mon 9/21

9:40 am-5:05 am

2 stops32h 25m

$1,163

BangkokWashington, D.C.

BKK - DCA

BKKDCA

Bangkok Suvarnabhumi

Mon 8/17

1:35 am-8:00 pm

2 stops29h 25m

Washington, D.C. Reagan-National

Tue 8/25

9:30 am-10:50 am

2 stops38h 20m

$1,211

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 11/3

12:15 am-6:05 pm

2 stops29h 50m

Washington, D.C. Reagan-National

Sun 11/8

8:50 pm-10:55 pm

2 stops38h 05m

$1,567

Chiang MaiWashington, D.C.

CNX - DCA

CNXDCA

Chiang Mai

Tue 11/3

12:15 am-2:54 pm

2 stops50h 39m

Washington, D.C. Reagan-National

Sun 11/8

6:05 am-10:55 pm

2 stops28h 50m

$1,571

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. Reagan-National Airport

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

Airlines

Other information

What is the cheapest airline that flies from Thailand to Washington, D.C. Reagan-National?

Delta is the most popular carrier operating from Thailand to Washington, D.C. Reagan-National

Cheap Thailand to Washington, D.C. Reagan-National Airport flight deals and tips

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

Fastest flight time	26h 30m
Direct flights	None

The fastest flight from Thailand to Washington, D.C. Reagan-National Airport takes 26h 30m

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

Search flight deals

Frequently asked questions about flying from Thailand to Washington, D.C. Reagan-National Airport

When did momondo last update prices for flights from Thailand to Washington, D.C. Reagan-National Airport?
Prices for flights from Thailand to Washington, D.C. Reagan-National Airport refresh daily.
How many operators does momondo search for flights from Thailand to Washington, D.C. Reagan-National Airport?
The number of operators available for flights from Thailand to Washington, D.C. Reagan-National Airport is 1 as of July 2026.
How old do you have to be to fly from Thailand to Washington, D.C. Reagan-National Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Thailand to Washington, D.C. Reagan-National Airport.
What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?
The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Thailand to Washington, D.C. Reagan-National Airport

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $1,044	Free Cancellation	Rating 7.4 9,938 reviews		Search United Airlines flights

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Tysons

Springfield

Fairfax

Bethesda

Edgewood

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Thailand to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Thailand to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Thailand.

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.

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Cheap flights from Thailand to Washington, D.C. from $624

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Thailand to Washington, D.C. departing on 12/12. 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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United Airlines flights from Thailand to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on Thailand to Washington, D.C. Reagan-National Airport flight tickets

Japan Airlines flights from Thailand to Washington, D.C. Reagan-National Airport

Our best Japan Airlines deals on Thailand to Washington, D.C. Reagan-National Airport flight tickets

momondo Fare Finder

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

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Thailand to Washington, D.C. Reagan-National Airport

What is the cheapest airline that flies from Thailand to Washington, D.C. Reagan-National?

How long does it take to fly to Washington, D.C. Reagan-National Airport?

Cheap Thailand to Washington, D.C. Reagan-National Airport flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Thailand to Washington, D.C. Reagan-National Airport

Best airlines flying from Thailand to Washington, D.C. Reagan-National Airport

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

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An easier way to manage your Washington, D.C. Reagan-National Airport trip

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