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

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

What airlines fly to Thailand?

Qatar Airways, Etihad Airways and Turkish Airlines are the top three most popular airlines that fly to Thailand from Washington, D.C. Dulles Intl Airport according to our data. Qatar Airways is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 14 different airlines that fly to Thailand on a routine basis, so you have a few additional options to choose from.

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

As of September 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Thailand.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl 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.

$398 Cheap Flights from Washington, D.C. Dulles Intl Airport to Thailand in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:30 pm - 10:45 pmIAD Washington, D.C. Dulles Intl-CNX Chiang Mai

46h 15m2 stops New York John F Kennedy Intl Incheon Intl

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

35h 55m1 stop Abu Dhabi Zayed Intl

$880Multiple Airlines

Wed, Nov 4 - Tue, Nov 10

3:10 pm - 12:30 pmIAD Washington, D.C. Dulles Intl-HKT Phuket City

34h 20m1 stop Abu Dhabi Zayed Intl

3:20 pm - 9:45 amHKT Phuket City-IAD Washington, D.C. Dulles Intl

29h 25m1 stop Abu Dhabi Zayed Intl

$885Etihad Airways

Wed, Sep 23 - Wed, Oct 7

2:35 pm - 7:15 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

28h 40m1 stop Abu Dhabi Zayed Intl

7:55 pm - 9:05 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 10m1 stop Abu Dhabi Zayed Intl

$888Etihad Airways

Mon, Feb 15 - Tue, Feb 23

11:50 am - 1:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

37h 35m1 stop Incheon Intl

11:15 pm - 5:33 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 18m2 stops Incheon Intl New York John F Kennedy Intl

$891Korean Air

Tue, Nov 10 - Tue, Dec 1

6:50 pm - 1:45 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

31h 55m1 stop Riyadh King Khaled Intl

3:20 pm - 3:45 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 25m1 stop Riyadh King Khaled Intl

$891SAUDIA

Fri, Oct 2 - Sat, Oct 31

11:05 am - 7:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 30m1 stop Doha Hamad Intl

8:00 pm - 3:40 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 40m1 stop Doha Hamad Intl

$892Qatar Airways

Thu, Oct 8 - Thu, Oct 22

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

40h 20m1 stop Doha Hamad Intl

3:00 am - 3:40 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

23h 40m1 stop Doha Hamad Intl

$892Qatar Airways

Thu, Oct 8 - Wed, Oct 14

11:05 am - 8:25 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

22h 20m1 stop Doha Hamad Intl

2:30 am - 3:40 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Doha Hamad Intl

$910JetBlue

Thu, Oct 1 - Wed, Oct 14

11:50 am - 12:20 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

24h 30m1 stop Incheon Intl

1:05 am - 9:50 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

20h 45m1 stop Incheon Intl

$912Korean Air

Sun, Jan 17 - Mon, Feb 1

11:05 am - 7:35 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 30m1 stop Doha Hamad Intl

8:00 pm - 3:40 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 40m1 stop Doha Hamad Intl

$912JetBlue

Thu, Oct 8 - Thu, Oct 22

Cheap last minute flights

Enter your travel dates to find the best prices.

3:10 pm - 6:20 pmIAD Washington, D.C. Dulles Intl-HKT Phuket City

40h 10m1 stop Abu Dhabi Zayed Intl

9:20 pm - 9:45 amHKT Phuket City-IAD Washington, D.C. Dulles Intl

23h 25m1 stop Abu Dhabi Zayed Intl

$883Etihad Airways

Sun, Sep 13 - Mon, Sep 28

3:10 pm - 11:55 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 45m1 stop Abu Dhabi Zayed Intl

9:15 am - 9:45 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 30m1 stop Abu Dhabi Zayed Intl

$890Etihad Airways

Mon, Sep 14 - Tue, Sep 22

9:45 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 50m2 stops Montreal Pierre Elliott Trudeau Intl Incheon Intl

7:05 am - 7:43 amBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

35h 38m2 stops Vancouver Intl Ottawa

$894Air Canada

Tue, Sep 15 - Wed, Oct 21

1:20 pm - 9:10 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

44h 50m1 stop Incheon Intl

8:15 am - 10:00 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 45m1 stop Taipei City Taiwan Taoyuan Intl

$914Multiple Airlines

Fri, Sep 11 - Fri, Sep 18

8:08 am - 1:05 amIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 57m2 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

$917Korean Air

Sat, Sep 12 - Sat, Sep 26

1:15 pm - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

23h 20m1 stop Incheon Intl

11:30 pm - 4:17 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

27h 47m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$923Korean Air

Tue, Sep 15 - Thu, Sep 24

7:25 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 10m2 stops Seattle/Tacoma Intl Incheon Intl

9:50 am - 11:23 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 33m2 stops Incheon Intl Minneapolis St Paul

$923Delta

Tue, Sep 15 - Thu, Sep 24

7:25 am - 11:35 pmIAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

29h 10m2 stops Seattle/Tacoma Intl Incheon Intl

2:35 am - 9:44 pmBKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 09m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$923Delta

Fri, Sep 11 - Thu, Sep 17

10:55 am - 11:10 amIAD Washington, D.C. Dulles Intl-DMK Bangkok Don Mueang Intl

37h 15m1 stop Dubai Intl

11:50 pm - 8:40 amDMK Bangkok Don Mueang Intl-IAD Washington, D.C. Dulles Intl

43h 50m1 stop Dubai Intl

$996Emirates

Mon, Sep 14 - Wed, Sep 30

10:55 am - 8:45 pmIAD Washington, D.C. Dulles Intl-DMK Bangkok Don Mueang Intl

22h 50m1 stop Dubai Intl

12:10 pm - 8:50 amDMK Bangkok Don Mueang Intl-IAD Washington, D.C. Dulles Intl

31h 40m1 stop Dubai Intl

$996Emirates

Mon, Sep 14 - Tue, Sep 22

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Etihad Airways flights from Washington, D.C. Dulles Intl Airport to Thailand

Our best Etihad Airways deals on Washington, D.C. Dulles Intl Airport to Thailand flight tickets

Etihad Airways

Sep 13

IAD3:10 pmWashington, D.C. Dulles Intl

40h 10m

1 stop

HKT6:20 pmPhuket City

Sep 28

HKT9:20 pmPhuket City

23h 25m

1 stop

IAD9:45 amWashington, D.C. Dulles Intl

$883

Etihad Airways

Jan 25

IAD2:35 pmWashington, D.C. Dulles Intl

20h 45m

1 stop

BKK11:20 pmBangkok Suvarnabhumi

Feb 8

BKK8:30 amBangkok Suvarnabhumi

36h 35m

1 stop

IAD9:05 amWashington, D.C. Dulles Intl

$888

Etihad Airways

Sep 20

IAD3:10 pmWashington, D.C. Dulles Intl

21h 45m

1 stop

BKK11:55 pmBangkok Suvarnabhumi

Sep 24

BKK9:15 amBangkok Suvarnabhumi

35h 30m

1 stop

IAD9:45 amWashington, D.C. Dulles Intl

$890

Air Canada flights from Washington, D.C. Dulles Intl Airport to Thailand

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Thailand flight tickets

Air Canada

Sep 15

IAD9:45 amWashington, D.C. Dulles Intl

26h 50m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Oct 21

BKK7:05 amBangkok Suvarnabhumi

35h 38m

2 stops

IAD7:43 amWashington, D.C. Dulles Intl

$894

Air Canada

Sep 23

IAD8:29 amWashington, D.C. Dulles Intl

26h 16m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 7

BKK9:50 amBangkok Suvarnabhumi

36h 31m

2 stops

IAD11:21 amWashington, D.C. Dulles Intl

$907

Air Canada

Sep 23

IAD8:29 amWashington, D.C. Dulles Intl

26h 16m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 7

BKK7:00 amBangkok Suvarnabhumi

24h 25m

2 stops

IAD8:25 pmWashington, D.C. Dulles Intl

$911

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Wed 11/4

12:30 pm-10:45 pm

2 stops46h 15m

Chiang Mai

Tue 11/10

9:10 am-9:05 am

1 stop35h 55m

$880

Washington, D.C.Phuket City

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

IADHKT

Washington, D.C. Dulles Intl

Wed 9/23

3:10 pm-12:30 pm

1 stop34h 20m

Phuket City

Wed 10/7

3:20 pm-9:45 am

1 stop29h 25m

$885

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Mon 2/15

2:35 pm-7:15 am

1 stop28h 40m

Bangkok Suvarnabhumi

Tue 2/23

7:55 pm-9:05 am

1 stop25h 10m

$888

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Tue 11/10

11:50 am-1:25 pm

1 stop37h 35m

Bangkok Suvarnabhumi

Tue 12/1

11:15 pm-5:33 pm

2 stops30h 18m

$891

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Fri 10/2

6:50 pm-1:45 pm

1 stop31h 55m

Bangkok Suvarnabhumi

Sat 10/31

3:20 pm-3:45 pm

1 stop35h 25m

$891

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-7:35 am

1 stop33h 30m

Bangkok Suvarnabhumi

Thu 10/22

8:00 pm-3:40 pm

1 stop30h 40m

$892

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 10/14

3:00 am-3:40 pm

1 stop23h 40m

$892

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Thu 10/1

11:05 am-8:25 pm

1 stop22h 20m

Bangkok Suvarnabhumi

Wed 10/14

2:30 am-3:40 pm

1 stop24h 10m

$910

Quickest round-trip

Washington, D.C.Bangkok

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

IADBKK

Washington, D.C. Dulles Intl

Sun 1/17

11:50 am-12:20 am

1 stop24h 30m

Bangkok Suvarnabhumi

Mon 2/1

1:05 am-9:50 am

1 stop20h 45m

$912

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-7:35 am

1 stop33h 30m

Bangkok Suvarnabhumi

Thu 10/22

8:00 pm-3:40 pm

1 stop30h 40m

$912

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. Dulles Intl 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 October is, on average, the cheapest month to fly to Thailand from Washington, D.C. Dulles Intl Airport, with most prices found around $951. If you are unable to visit Thailand during the month of October, then departing from Washington, D.C. Dulles Intl Airport during the month September is also very affordable. Most momondo users find prices during this month for around $955.

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

You are more likely to see cheaper flights to Thailand from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $1,120 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. Dulles Intl Airport for as low as $996 on momondo.

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

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

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

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

Best Price Found	$398
Fastest flight time	20h 05m
Direct flights	None

The best one-way flight to Thailand from Washington, D.C. Dulles Intl Airport in the past 72 hours is $398. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Thailand found on momondo in the last 72 hours is $880.

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

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

Search flight deals

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

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Thailand?
Prices for flights from Washington, D.C. Dulles Intl Airport to Thailand are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Thailand?
As of September 2026, there are 14 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Thailand.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Thailand?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl 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. Dulles Intl Airport to Thailand

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

Airline	Rating	Free Cancellation	Price
Korean Air	PriceFrom $754	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
AIR PREMIA	PriceFrom $784	Free Cancellation	Rating 8.1 106 reviews	Search AIR PREMIA flights
Etihad Airways	PriceFrom $785	Free Cancellation	Rating 7.3 1,535 reviews	Search Etihad Airways flights
Delta	PriceFrom $798	Free Cancellation	Rating 7.8 8,556 reviews	Search Delta flights
Qatar Airways	PriceFrom $814	Free Cancellation	Rating 7.4 3,734 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 4,473 reviews	Search Turkish Airlines flights
Alaska Airlines	PriceFrom $878	Free Cancellation	Rating 7.9 12,907 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $919	Free Cancellation	Rating 7.1 3,040 reviews	Search JetBlue flights
United Airlines	PriceFrom $932	Free Cancellation	Rating 7.4 10,197 reviews	Search United Airlines flights
ANA	PriceFrom $955	Free Cancellation	Rating 8.3 1,313 reviews	Search ANA flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Thailand from Washington, D.C..

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?

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 Thailand from Washington, D.C..

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.