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

Cathay Pacific, JetBlue, and United Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Thailand

What airlines fly to Thailand?

Delta, Cathay Pacific and Korean Air are the top three most popular airlines that fly to Thailand from Washington, D.C. Reagan-National Airport according to our data. Delta is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 5 different airlines that fly to Thailand on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Washington, D.C. Reagan-National Airport to Thailand are refreshed on a daily basis.

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

As of March 2026, there are 5 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Thailand.

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

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 Washington, D.C. Reagan-National Airport to Thailand.

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

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

$430 Cheap Flights from Washington, D.C. Reagan-National Airport to Thailand in 2026

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:31 pm - 10:00 am

DCA

BKK

27h 29m

2 stops

11:00 am - 12:55 am

BKK

DCA

24h 55m

2 stops

$948Cathay Pacific

Wed, Aug 26 - Sun, Sep 13

6:41 pm - 4:40 pm

DCA

BKK

34h 59m

2 stops

5:50 pm - 5:59 pm

BKK

DCA

35h 09m

2 stops

$952Multiple Airlines

Tue, Apr 7 - Tue, Apr 21

12:31 pm - 12:10 am

DCA

BKK

24h 39m

2 stops

7:15 pm - 3:55 pm

BKK

DCA

32h 40m

2 stops

$963Cathay Pacific

Mon, Aug 10 - Tue, Nov 10

8:00 am - 10:35 am

DCA

CNX

39h 35m

2 stops

11:35 am - 8:06 pm

CNX

DCA

43h 31m

2 stops

$1,177EVA Air

Tue, Mar 24 - Tue, May 19

8:38 pm - 10:10 pm

DCA

HKT

38h 32m

2 stops

11:25 pm - 10:34 pm

HKT

DCA

34h 09m

2 stops

$1,182Delta

Wed, Apr 15 - Wed, Apr 22

9:00 am - 10:10 pm

DCA

HKT

50h 10m

2 stops

11:25 pm - 5:30 pm

HKT

DCA

53h 05m

2 stops

$1,193Korean Air

Mon, Apr 20 - Sun, Apr 26

5:00 pm - 10:10 pm

DCA

HKT

66h 10m

2 stops

11:25 pm - 5:30 pm

HKT

DCA

53h 05m

2 stops

$1,199Korean Air

Sun, Apr 19 - Mon, Apr 27

6:59 am - 10:10 pm

DCA

HKT

28h 11m

2 stops

11:25 pm - 11:43 pm

HKT

DCA

35h 18m

2 stops

$1,222Delta

Thu, Apr 16 - Thu, Apr 23

1:25 pm - 6:20 pm

DCA

KBV

41h 55m

2 stops

9:05 am - 5:46 pm

KBV

DCA

43h 41m

2 stops

$2,205Etihad Airways

Tue, Apr 14 - Tue, Apr 21

7:30 am - 6:30 am

DCA

KBV

36h 00m

2 stops

9:05 pm - 5:46 pm

KBV

DCA

31h 41m

2 stops

$2,357Etihad Airways

Sun, Apr 12 - Sun, Apr 19

Qatar Airways flights from Washington, D.C. Reagan-National Airport to Thailand

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

Qatar Airways

Mar 8

DCA3:21 pmWashington, D.C. Reagan-National

27h 54m

2 stops

BKK6:15 amBangkok Suvarnabhumi

Mar 15

BKK6:55 pmBangkok Suvarnabhumi

32h 30m

2 stops

DCA4:25 pmWashington, D.C. Reagan-National

$1,070

Qatar Airways

Apr 8

DCA5:48 pmWashington, D.C. Reagan-National

38h 17m

2 stops

BKK7:05 pmBangkok Suvarnabhumi

Apr 20

BKK1:45 amBangkok Suvarnabhumi

32h 43m

2 stops

DCA11:28 pmWashington, D.C. Reagan-National

$1,072

Qatar Airways

Mar 7

DCA3:21 pmWashington, D.C. Reagan-National

27h 19m

2 stops

BKK6:40 amBangkok Suvarnabhumi

Apr 7

BKK9:55 amBangkok Suvarnabhumi

41h 55m

2 stops

DCA4:50 pmWashington, D.C. Reagan-National

$1,113

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

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

Delta

Apr 30

DCA6:05 amWashington, D.C. Reagan-National

30h 30m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 24

BKK9:40 pmBangkok Suvarnabhumi

34h 05m

2 stops

DCA8:45 pmWashington, D.C. Reagan-National

$1,081

Delta

Apr 27

DCA7:40 amWashington, D.C. Reagan-National

28h 55m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 18

BKK9:50 amBangkok Suvarnabhumi

45h 55m

2 stops

DCA8:45 pmWashington, D.C. Reagan-National

$1,082

Delta

Apr 26

DCA7:56 pmWashington, D.C. Reagan-National

40h 39m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 14

BKK9:50 amBangkok Suvarnabhumi

24h 54m

2 stops

DCA11:44 pmWashington, D.C. Reagan-National

$1,088

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 8/26

7:31 pm-10:00 am

2 stops27h 29m

Bangkok Suvarnabhumi

Sun 9/13

11:00 am-12:55 am

2 stops24h 55m

$948

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 4/7

6:41 pm-4:40 pm

2 stops34h 59m

Bangkok Suvarnabhumi

Tue 4/21

5:50 pm-5:59 pm

2 stops35h 09m

$952

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 8/10

12:31 pm-12:10 am

2 stops24h 39m

Bangkok Suvarnabhumi

Tue 11/10

7:15 pm-3:55 pm

2 stops32h 40m

$963

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Tue 3/24

8:00 am-10:35 am

2 stops39h 35m

Chiang Mai

Tue 5/19

11:35 am-8:06 pm

2 stops43h 31m

$1,177

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Wed 4/15

8:38 pm-10:10 pm

2 stops38h 32m

Phuket City

Wed 4/22

11:25 pm-10:34 pm

2 stops34h 09m

$1,182

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Mon 4/20

9:00 am-10:10 pm

2 stops50h 10m

Phuket City

Sun 4/26

11:25 pm-5:30 pm

2 stops53h 05m

$1,193

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Sun 4/19

5:00 pm-10:10 pm

2 stops66h 10m

Phuket City

Mon 4/27

11:25 pm-5:30 pm

2 stops53h 05m

$1,199

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Thu 4/16

6:59 am-10:10 pm

2 stops28h 11m

Phuket City

Thu 4/23

11:25 pm-11:43 pm

2 stops35h 18m

$1,222

Washington, D.C.Krabi

DCA - KBV

DCAKBV

Washington, D.C. Reagan-National

Tue 4/14

1:25 pm-6:20 pm

2 stops41h 55m

Krabi

Tue 4/21

9:05 am-5:46 pm

2 stops43h 41m

$2,205

Washington, D.C.Krabi

DCA - KBV

DCAKBV

Washington, D.C. Reagan-National

Sun 4/12

7:30 am-6:30 am

2 stops36h 00m

Krabi

Sun 4/19

9:05 pm-5:46 pm

2 stops31h 41m

$2,357

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. Reagan-National Airport 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

What is the cheapest month to fly to Thailand?

The month of February is, on average, the cheapest month to fly to Thailand from Washington, D.C. Reagan-National Airport, with most prices found around $1,019. If you are unable to visit Thailand during the month of February, then departing from Washington, D.C. Reagan-National Airport during the month January is also very affordable. Most momondo users find prices during this month for around $1,042.

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

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

Fastest flight time	24h 55m
Direct flights	None

The fastest flight from Washington, D.C. Reagan-National Airport to Thailand takes 24h 55m

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

Search flight deals

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Thailand?
Prices for flights from Washington, D.C. Reagan-National Airport to Thailand are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Thailand?
As of March 2026, there are 5 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Thailand.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Thailand?
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 Washington, D.C. Reagan-National Airport to Thailand.
What documentation or ID do you need to fly to Thailand?
The required travel and health documents for your Thailand 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 Thailand. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $845	Free Cancellation	Rating 7.1 10,775 reviews	Search Air Canada flights
Korean Air	PriceFrom $857	Free Cancellation	Rating 8.4 1,195 reviews	Search Korean Air flights
United Airlines	PriceFrom $936	Free Cancellation	Rating 7.4 9,382 reviews	Search United Airlines flights
Delta	PriceFrom $977	Free Cancellation	Rating 7.9 8,245 reviews	Search Delta flights
Cathay Pacific	PriceFrom $1,049	Free Cancellation	Rating 7.6 1,187 reviews	Search Cathay Pacific flights

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to Thailand from Washington, D.C. with this policy.

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?

Of course. momondo tracks the price of Washington, D.C. to Thailand flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in Thailand

Flights to Bangkokfrom $498

Flights to Phuket Cityfrom $521

Flights to Chiang Maifrom $666

Flights to Ko Samuifrom $712

Flights to Krabifrom $652

Flights to Surat Thanifrom $812

Flights to Chiang Raifrom $812

Flights to Udon Thanifrom $882

Flights to Hat Yaifrom $1,131

Flights to Khon Kaenfrom $883

Flights to Ubon Ratchathanifrom $931

Flights to Tratfrom $958

Cheap flights from Washington, D.C. Reagan-National Airport to Thailand from $430

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Qatar Airways flights from Washington, D.C. Reagan-National Airport to Thailand

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

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

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

momondo Fare Finder

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

See travel insights to Thailand from

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

What is the cheapest month to fly to Thailand?

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

What airlines fly to Thailand?

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

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

Fastest flight time

Direct flights

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

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

Why use momondo?

An easier way to manage your Thailand 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

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Washington, D.C. Reagan-National Airport flight routes

According to popular flight searches on momondo this year

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Fly your favorite airline to Thailand

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List of cabin classes available on flights landing in Thailand. Availability may vary depending on flight origin and airline.

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