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

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

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 23h 20m 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 30m.

What airlines fly to Thailand?

Etihad Airways, Qatar Airways and Korean Air are the top three most popular airlines that fly to Thailand from Washington, D.C. according to our data. Etihad Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 16 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. 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 16 as of November 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.

$309 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.

10:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

38h 30m1 stop Addis Ababa Bole

1:55 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 05m2 stops Addis Ababa Bole Rome Fiumicino

$848Ethiopian Air

Mon, Nov 16 - Mon, Nov 30

10:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

38h 30m1 stop Addis Ababa Bole

1:35 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 25m2 stops Addis Ababa Bole Rome Fiumicino

$849Ethiopian Air

Tue, Nov 17 - Thu, Nov 26

2:25 pm - 11:40 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

2:55 am - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 05m1 stop Abu Dhabi Zayed Intl

$853Etihad Airways

Mon, Nov 16 - Mon, Nov 30

2:25 pm - 11:40 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

7:55 pm - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 05m1 stop Abu Dhabi Zayed Intl

$853Etihad Airways

Mon, Feb 1 - Mon, Feb 15

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

$890Korean Air

Mon, Jan 25 - Sun, Feb 7

1:15 pm - 1:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

37h 20m1 stop Incheon Intl

11:30 pm - 11:15 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

22h 45m1 stop Incheon Intl

$890Korean Air

Wed, Mar 31 - Tue, May 18

6:01 am - 12:20 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

30h 19m2 stops Detroit Metropolitan Wayne County Incheon Intl

1:05 am - 9:09 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

32h 04m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$901Delta

Thu, Jan 21 - Wed, Feb 3

6:01 am - 12:20 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

30h 19m2 stops Detroit Metropolitan Wayne County Incheon Intl

1:05 am - 9:09 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

32h 04m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$901Delta

Tue, Jan 19 - Wed, Feb 3

12:35 am - 9:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

10:45 pm - 9:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 50m1 stop Incheon Intl

$906AIR PREMIA

Sun, Mar 21 - Tue, Apr 6

12:35 am - 9:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

10:45 pm - 9:35 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 50m1 stop Incheon Intl

$906AIR PREMIA

Fri, Mar 19 - Tue, Apr 6

Cheap last minute flights

Enter your travel dates to find the best prices.

8:50 pm - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

27h 40m2 stops Lome Addis Ababa Bole

1:35 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 25m2 stops Addis Ababa Bole Rome Fiumicino

$862Ethiopian Air

Mon, Nov 9 - Thu, Nov 26

10:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

38h 30m1 stop Addis Ababa Bole

1:55 am - 8:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 05m2 stops Addis Ababa Bole Rome Fiumicino

$862Ethiopian Air

Thu, Nov 5 - Wed, Nov 11

2:25 pm - 11:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 10m1 stop Abu Dhabi Zayed Intl

2:40 pm - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 20m1 stop Abu Dhabi Zayed Intl

$866Etihad Airways

Mon, Nov 9 - Tue, Nov 17

2:25 pm - 11:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 10m1 stop Abu Dhabi Zayed Intl

2:40 pm - 9:00 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 20m1 stop Abu Dhabi Zayed Intl

$898Etihad Airways

Mon, Nov 9 - Thu, Dec 3

6:10 am - 12:20 amDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

30h 10m2 stops Detroit Metropolitan Wayne County Incheon Intl

9:50 am - 11:37 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

25h 47m2 stops Incheon Intl Minneapolis St Paul

$970Delta

Wed, Nov 4 - Wed, Nov 11

10:35 am - 10:05 amIAD Washington, D.C. Dulles Intl-DMK Bangkok Don Mueang Intl

35h 30m1 stop Dubai Intl

11:00 pm - 8:35 amDMK Bangkok Don Mueang Intl-IAD Washington, D.C. Dulles Intl

45h 35m1 stop Dubai Intl

$995Emirates

Mon, Nov 9 - Tue, Nov 17

10:35 am - 10:05 amIAD Washington, D.C. Dulles Intl-DMK Bangkok Don Mueang Intl

35h 30m1 stop Dubai Intl

11:10 am - 8:35 amDMK Bangkok Don Mueang Intl-IAD Washington, D.C. Dulles Intl

33h 25m1 stop Dubai Intl

$995Emirates

Mon, Nov 9 - Mon, Nov 23

7:59 am - 12:20 amDCA Washington, D.C. Reagan-National-BKK Bangkok Suvarnabhumi

28h 21m2 stops Atlanta Hartsfield-Jackson Incheon Intl

11:15 pm - 4:20 pmBKK Bangkok Suvarnabhumi-DCA Washington, D.C. Reagan-National

29h 05m2 stops Incheon Intl Boston Logan Intl

$1,010Delta

Sun, Nov 8 - Thu, Nov 19

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

35h 20m1 stop Doha Hamad Intl

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

24h 55m1 stop Doha Hamad Intl

$1,018Qatar Airways

Mon, Nov 9 - Mon, Nov 23

8:05 pm - 2:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

30h 05m1 stop Doha Hamad Intl

6:55 pm - 3:55 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 00m1 stop Doha Hamad Intl

$1,019Qatar Airways

Mon, Nov 9 - Tue, Nov 24

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Delta flights from Washington, D.C. to Thailand

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

Delta

Feb 1

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

36h 45m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Feb 10

BKK9:40 pmBangkok Suvarnabhumi

36h 35m

2 stops

DCA10:15 pmWashington, D.C. Reagan-National

$901

Delta

Jan 20

IAD5:26 pmWashington, D.C. Dulles Intl

42h 54m

2 stops

BKK12:20 amBangkok Suvarnabhumi

Feb 4

BKK9:50 amBangkok Suvarnabhumi

26h 56m

2 stops

IAD12:46 amWashington, D.C. Dulles Intl

$906

Delta

Jan 30

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

28h 45m

2 stops

CNX10:45 pmChiang Mai

Mar 1

CNX12:20 amChiang Mai

32h 23m

2 stops

DCA8:43 pmWashington, D.C. Reagan-National

$931

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

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

Japan Airlines

Jan 12

DCA5:00 amWashington, D.C. Reagan-National

30h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Jan 26

BKK10:05 pmBangkok Suvarnabhumi

33h 28m

2 stops

DCA7:33 pmWashington, D.C. Reagan-National

$1,100

Japan Airlines

Jan 17

DCA5:01 pmWashington, D.C. Reagan-National

48h 04m

2 stops

BKK5:05 amBangkok Suvarnabhumi

Feb 16

BKK9:50 amBangkok Suvarnabhumi

42h 09m

2 stops

DCA3:59 pmWashington, D.C. Reagan-National

$1,115

Japan Airlines

Nov 11

DCA5:05 pmWashington, D.C. Reagan-National

35h 20m

2 stops

BKK4:25 pmBangkok Suvarnabhumi

Nov 17

BKK9:50 amBangkok Suvarnabhumi

47h 10m

2 stops

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

$1,234

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.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 11/16

10:00 am-12:30 pm

1 stop38h 30m

Bangkok Suvarnabhumi

Mon 11/30

1:55 am-8:00 am

2 stops42h 05m

$848

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Tue 11/17

10:00 am-12:30 pm

1 stop38h 30m

Bangkok Suvarnabhumi

Thu 11/26

1:35 am-8:00 am

2 stops42h 25m

$849

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 11/16

2:25 pm-11:40 pm

1 stop21h 15m

Bangkok Suvarnabhumi

Mon 11/30

2:55 am-9:00 am

1 stop42h 05m

$853

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 2/1

2:25 pm-11:40 pm

1 stop21h 15m

Bangkok Suvarnabhumi

Mon 2/15

7:55 pm-9:00 am

1 stop25h 05m

$853

Quickest round-trip

Washington, D.C.Chiang Mai

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

IADCNX

Washington, D.C. Dulles Intl

Mon 1/25

11:50 am-10:45 pm

1 stop22h 55m

Chiang Mai

Sun 2/7

12:20 am-9:50 am

1 stop21h 30m

$890

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Wed 3/31

1:15 pm-1:35 pm

1 stop37h 20m

Bangkok Suvarnabhumi

Tue 5/18

11:30 pm-11:15 am

1 stop22h 45m

$890

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 1/21

6:01 am-12:20 am

2 stops30h 19m

Bangkok Suvarnabhumi

Wed 2/3

1:05 am-9:09 pm

2 stops32h 04m

$901

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Tue 1/19

6:01 am-12:20 am

2 stops30h 19m

Bangkok Suvarnabhumi

Wed 2/3

1:05 am-9:09 pm

2 stops32h 04m

$901

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 3/21

12:35 am-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Tue 4/6

10:45 pm-9:35 pm

1 stop33h 50m

$906

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Fri 3/19

12:35 am-9:25 pm

1 stop33h 50m

Bangkok Suvarnabhumi

Tue 4/6

10:45 pm-9:35 pm

1 stop33h 50m

$906

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 $959. If you are unable to visit Thailand during the month of September, then departing from Washington, D.C. during the month February is also very affordable. Most momondo users find prices during this month for around $1,013.

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 $1,113 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 30% 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	$309
Fastest flight time	21h 15m
Direct flights	None

The best one-way flight to Thailand from Washington, D.C. in the past 72 hours is $309. The best round-trip flight deal from Washington, D.C. to Thailand found on momondo in the last 72 hours is $848.

The fastest flight from Washington, D.C. to Thailand takes 21h 15m

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 16 as of November 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
AIR PREMIA	PriceFrom $647	Free Cancellation	Rating 8.0 115 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $790	Free Cancellation	Rating 7.3 1,557 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom $827	Free Cancellation	Rating 7.4 3,712 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $834	Free Cancellation	Rating 7.4 4,466 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $845	Free Cancellation	Rating 7.1 11,853 reviews	Search Air Canada flights
Korean Air	PriceFrom $869	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
United Airlines	PriceFrom $936	Free Cancellation	Rating 7.3 10,458 reviews	Search United Airlines flights
ANA	PriceFrom $945	Free Cancellation	Rating 8.3 1,339 reviews	Search ANA flights
Delta	PriceFrom $977	Free Cancellation	Rating 7.8 8,696 reviews	Search Delta flights
EVA Air	PriceFrom $986	Free Cancellation	Rating 8.5 1,552 reviews	Search EVA Air 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.