HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Thailand

$369+ Cheap flights from Washington, D.C. (WAS) to Thailand

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Thailand with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Washington, D.C. to Thailand

Cheapest flights from Washington, D.C. to Thailand
Explore the most affordable flight options available from Washington, D.C. to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Booking.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:15 pmIAD - HKT
2 stops36h 30mIndiGo
Thu 11/2011:05 amHKT - IAD
2 stops44h 15mIndiGo
Deal found 10/28$833
This CheapTickets.ch deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:05 pmIAD - BKK
1 stop35h 20mQatar Airways
Wed 12/32:00 amBKK - IAD
1 stop25h 55mQatar Airways
Deal found 10/28$849
This Booking.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:15 pmIAD - HKT
2 stops36h 30mIndiGo
Thu 11/1311:05 amHKT - IAD
2 stops44h 15mIndiGo
Deal found 10/29$849
This oojo deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2810:40 amIAD - BKK
1 stop20h 45mQatar Airways
Wed 12/103:00 amBKK - IAD
1 stop24h 55mQatar Airways
Deal found 10/28$854
This Etihad Airways deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:10 pmIAD - BKK
1 stop38h 10mEtihad Airways
Wed 12/108:50 pmBKK - IAD
1 stop30h 40mEtihad Airways
Deal found 10/30$855
This Etihad Airways deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/309:10 pmIAD - BKK
1 stop38h 10mEtihad Airways
Sat 3/282:55 amBKK - IAD
1 stop41h 50mEtihad Airways
Deal found 10/29$856
This FlightHub deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:05 pmIAD - BKK
1 stop34h 20mQatar Airways
Sun 12/148:30 pmBKK - IAD
1 stop31h 25mQatar Airways
Deal found 10/28$859
This oojo deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:13 pmIAD - BKK
2 stops35h 17mSTARLUX Airlines
Mon 11/101:45 pmBKK - IAD
2 stops28h 38mSTARLUX Airlines
Deal found 10/28$863
This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:13 pmIAD - BKK
2 stops34h 17mSTARLUX Airlines
Mon 11/171:45 pmBKK - IAD
2 stops28h 38mSTARLUX Airlines
Deal found 10/29$865
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:10 pmIAD - BKK
1 stop38h 10mEtihad Airways
Tue 12/239:25 amBKK - IAD
1 stop35h 40mEtihad Airways
Deal found 10/29$868
This EaseMyTrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:15 pmIAD - BKK
2 stops35h 50mIndiGo
Wed 11/1910:50 amBKK - IAD
2 stops44h 30mIndiGo
Deal found 10/28$869
This oojo deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:59 amDCA - BKK
2 stops36h 51mChina Airlines
Fri 11/72:05 pmBKK - DCA
2 stops41h 55mChina Airlines
Deal found 10/30$870

Cheap flight deals from Washington, D.C. to Thailand

Keep the following information in mind while searching for Washington, D.C. to Thailand flight deals. Data was last updated October 30, 2025.

Round-trip from

$833
(Booking.com)

One-way from

$369
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,038
From Washington, D.C. (WAS) to Thailand
Search Deals
One-way flight from Washington, D.C. (WAS) to Thailand
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($185 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Thailand that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Thailand that are best for you.

Fly from

Washington, D.C.

Fly to

Thailand

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 3/2

2:35 pm-6:00 pm

1 stop39h 25m

Bangkok Suvarnabhumi

Thu 3/26

2:55 am-10:05 am

1 stop42h 10m

$852

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 2/8

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Fri 2/20

7:35 pm-9:05 am

2 stops49h 30m

$852

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 2/5

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Sun 2/15

8:55 am-9:05 am

1 stop36h 10m

$852

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/23

2:35 pm-7:10 am

1 stop28h 35m

Bangkok Suvarnabhumi

Sun 3/8

2:55 am-10:05 am

1 stop42h 10m

$852

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 2/9

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Mon 3/9

5:40 pm-10:05 am

2 stops51h 25m

$856

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Sun 1/11

2:35 pm-7:10 am

1 stop28h 35m

Bangkok Suvarnabhumi

Sun 4/26

9:10 am-9:45 am

1 stop35h 35m

$857

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 2/9

7:35 am-11:20 pm

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 3/10

2:05 am-10:16 pm

2 stops31h 11m

$928

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 1/12

6:59 am-12:55 am

2 stops29h 56m

Bangkok Suvarnabhumi

Mon 2/16

9:30 pm-6:06 pm

2 stops32h 36m

$953

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 1/12

7:35 am-11:20 pm

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 1/20

9:40 am-11:34 pm

2 stops25h 54m

$953

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 1/15

6:59 am-12:55 am

2 stops29h 56m

Bangkok Suvarnabhumi

Mon 2/16

9:30 pm-6:06 pm

2 stops32h 36m

$953

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Washington, D.C. to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Thailand

What is the cheapest month to book a flight from Washington, D.C. to Thailand?

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to Thailand (average of $616). Flying from Washington, D.C. to Thailand in July is currently the most expensive (average of $919). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to TH?

Find hourly flight availability from Washington, D.C. to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s optimal to fly from Washington, D.C. to Thailand in the evening. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Washington, D.C. to Thailand?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Thailand. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Thailand flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Thailand. Reviews last updated October 30, 2025.
Get a feel of what it's like to fly with Korean Air, Emirates, and Qatar Airways from Washington, D.C. to Thailand by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,155 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Emirates
8.1
Very good
3,394 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,661 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Etihad Airways
7.4
Good
1,284 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Turkish Airlines
7.3
Good
4,033 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Thailand. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Thailand?

    Etihad Airways, Delta, and Korean Air can get you from Washington, D.C. to Thailand in just under 27h 45m. Your travel time can differ by up to 11h 40m. The distance from Washington, D.C. to Thailand is about 8797 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Washington, D.C. to Thailand one-way?

    One-way options have recently been found by users for as low as $462 on STARLUX Airlines. Other airlines that offer cheap prices include JetBlue from $475 and IndiGo from $478 one-way.

  • What are the most popular routes from Washington, D.C. to Thailand?

    The most popular route from Washington, D.C. to Thailand is Washington, D.C. Dulles Intl - Bangkok Suvarnabhumi. You may also consider Washington, D.C. Reagan-National - Bangkok Suvarnabhumi or Baltimore/Washington - Bangkok Suvarnabhumi.

  • Can I find deals for flights from Washington, D.C. to Thailand that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Thailand flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Thailand?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Thailand.

  • Can I find deals for business class flights from Washington, D.C. to Thailand?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Thailand by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Thailand?

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to Thailand (average of $616). Flying from Washington, D.C. to Thailand in July is currently the most expensive (average of $919). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Haneda flights
Dulles Intl to Suvarnabhumi flights
Dulles Intl to Narita flights
Dulles Intl to New Delhi flights
Reagan-National to Narita flights
Dulles Intl to Mumbai flights
Reagan-National to Haneda flights
Dulles Intl to Hyderabad flights
Reagan-National to New Delhi flights
Reagan-National to Suvarnabhumi flights
Dulles Intl to Incheon Intl flights
Dulles Intl to Bangalore flights
Dulles Intl to Ho Chi Minh City flights
Reagan-National to Hyderabad flights
Reagan-National to Bangalore flights
Reagan-National to Mumbai flights
Dulles Intl to Islamabad flights
Dulles Intl to Manila flights
Dulles Intl to Don Mueang Intl flights
Dulles Intl to Lahore flights
Dulles Intl to Taiwan Taoyuan Intl flights
Dulles Intl to Ahmedabad flights
Reagan-National to Islamabad flights
Reagan-National to Incheon Intl flights
Reagan-National to Manila flights
Reagan-National to Ho Chi Minh City flights
Reagan-National to Ahmedabad flights
Dulles Intl to Dhaka flights
Dulles Intl to Chennai flights
Dulles Intl to Hong Kong flights
Dulles Intl to Hongqiao Intl flights
Reagan-National to Chennai flights
Reagan-National to Taiwan Taoyuan Intl flights
Dulles Intl to Karachi flights
Dulles Intl to Gimpo Intl flights
Reagan-National to Hong Kong flights
Reagan-National to Lahore flights
Reagan-National to Hongqiao Intl flights
Dulles Intl to Capital flights
Dulles Intl to Kathmandu flights
Reagan-National to Dhaka flights
Dulles Intl to Colombo flights
Dulles Intl to Pu Dong flights
Dulles Intl to Singapore flights
Dulles Intl to Sung Shan flights
Dulles Intl to Kuala Lumpur Intl flights
Dulles Intl to Soekarno-Hatta Intl flights
Dulles Intl to Cochin flights
Reagan-National to Singapore flights
Dulles Intl to Da Nang flights

Top 10 airlines flying from Washington, D.C. to Thailand

Discover the top 10 airlines that operate flights from Washington, D.C. to Thailand. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$565Average$866FlexibilityNo cancel feeOn-time67%
Air IndiaCheapest$700Average$962FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$743Average$1,439FlexibilityNo cancel feeOn-time81%
DeltaCheapest$798Average$1,145FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$827Average$1,111FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$852Average$1,290FlexibilityNo cancel feeOn-time68%
ANACheapest$895Average$1,212FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$897Average$1,110FlexibilityNo cancel feeOn-time77%
JetBlueCheapest$900Average$1,561FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$920Average$1,396FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.