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$494+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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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 April 2, 2025.

Round-trip from

$715
(FlightHub)

One-way from

$494
(Ovago)

Popular in

December

Cheapest in

September

Average price

$1,120
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. 8% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 2, 2025.

This FlightHub deal was found by Cheapflights users on 4/1. 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.
Sat 5/311:00 pmIAD - CNX
1 stop35h 50mAir China
Thu 5/1511:05 pmCNX - IAD
1 stop31h 25mAir China
Deal found 4/1$715
This Justfly.com deal was found by Cheapflights users on 4/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:07 pmIAD - HKT
2 stops49h 58mSingapore Airlines
Mon 9/159:55 amHKT - IAD
2 stops41h 04mSingapore Airlines
Deal found 4/1$971
This Justfly.com deal was found by Cheapflights users on 4/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2310:05 pmIAD - BKK
1 stop33h 30mEtihad Airways
Tue 5/62:55 amBKK - IAD
1 stop24h 15mEtihad Airways
Deal found 4/1$979
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Wed 5/1411:00 amIAD - BKK
1 stop22h 25mMultiple Airlines
Sat 5/241:15 amBKK - IAD
2 stops49h 59mMultiple Airlines
Deal found 3/31$986
This oojo deal was found by Cheapflights users on 4/1. 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 4/2910:05 pmIAD - HKT
2 stops37h 55mEtihad Airways
Thu 5/810:20 amHKT - IAD
2 stops40h 50mEtihad Airways
Deal found 4/1$993
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/218:30 pmBWI - BKK
2 stops23h 45mMultiple Airlines
Wed 5/76:40 pmBKK - BWI
2 stops35h 59mMultiple Airlines
Deal found 3/31$1,004
This oojo deal was found by Cheapflights users on 3/31. 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 4/2911:00 amIAD - HKT
1 stop21h 30mAir India
Thu 5/86:10 pmHKT - IAD
1 stop24h 30mAir India
Deal found 3/31$1,006
This FlightHub deal was found by Cheapflights users on 4/1. 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.
Wed 11/191:10 pmIAD - HKT
1 stop38h 35mTurkish Airlines
Thu 11/2710:25 pmHKT - IAD
1 stop33h 05mTurkish Airlines
Deal found 4/1$1,008
This Justfly.com deal was found by Cheapflights users on 4/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2910:05 pmIAD - HKT
2 stops37h 55mMultiple Airlines
Thu 5/87:10 pmHKT - IAD
2 stops32h 00mMultiple Airlines
Deal found 4/1$1,024
This Justfly.com deal was found by Cheapflights users on 4/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:07 pmIAD - BKK
2 stops49h 28mSingapore Airlines
Tue 9/303:30 pmBKK - IAD
2 stops35h 29mSingapore Airlines
Deal found 4/2$1,027
This China Airlines deal was found by Cheapflights users on 4/1. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:38 pmDCA - BKK
2 stops29h 07mMultiple Airlines
Sun 5/42:40 amBKK - DCA
2 stops48h 58mMultiple Airlines
Deal found 4/1$1,031
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3011:00 amIAD - DMK
2 stops30h 20mMultiple Airlines
Wed 5/75:50 pmDMK - IAD
2 stops32h 55mMultiple Airlines
Deal found 4/1$1,032

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 April 2, 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.Chiang Mai

IAD - CNX

IADCNX

Washington, D.C. Dulles Intl

Sat 5/3

11:00 pm-9:50 pm

1 stop35h 50m

Chiang Mai

Thu 5/15

11:05 pm-7:30 pm

1 stop31h 25m

$715

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 4/23

10:05 pm-6:35 pm

1 stop33h 30m

Bangkok Suvarnabhumi

Tue 5/6

2:55 am-4:10 pm

1 stop24h 15m

$979

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 5/14

11:00 am-8:25 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Sat 5/24

1:15 am-4:14 pm

2 stops49h 59m

$986

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Tue 4/29

10:05 pm-11:00 pm

2 stops37h 55m

Phuket City

Thu 5/8

10:20 am-4:10 pm

2 stops40h 50m

$993

BaltimoreBangkok

BWI - BKK

BWIBKK

Baltimore/Washington

Mon 4/21

8:30 pm-7:15 am

2 stops23h 45m

Bangkok Suvarnabhumi

Wed 5/7

6:40 pm-7:39 pm

2 stops35h 59m

$1,004

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Tue 4/29

11:00 am-7:30 pm

1 stop21h 30m

Phuket City

Thu 5/8

6:10 pm-7:40 am

1 stop24h 30m

$1,006

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Tue 4/29

10:05 pm-11:00 pm

2 stops37h 55m

Phuket City

Thu 5/8

7:10 pm-4:10 pm

2 stops32h 00m

$1,024

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Mon 9/8

8:07 pm-8:35 am

2 stops49h 28m

Bangkok Suvarnabhumi

Tue 9/30

3:30 pm-3:59 pm

2 stops35h 29m

$1,027

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 8/27

1:30 pm-3:25 pm

1 stop38h 55m

Bangkok Suvarnabhumi

Fri 9/5

6:45 am-11:45 am

1 stop40h 00m

$1,034

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 5/14

11:00 am-8:25 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Mon 5/26

3:15 pm-7:40 am

1 stop27h 25m

$1,042

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from Washington, D.C. to Thailand (average of $958). Flying from Washington, D.C. to Thailand in December is currently the most expensive (average of $1,574). 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 April 2, 2025.

When flying from Washington, D.C. to Thailand, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Thailand by month

Plan your trip to Thailand by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Thailand ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Thailand when rainfall is around 0.4 in.

Temperature in Thailand by month

Plan your trip to Thailand by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Thailand, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 April 2, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Thailand, such as Korean Air, Japan Airlines and ANA. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

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
1,052 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

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.
Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

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.
ANA
8.3
Very good
830 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

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.
China Airlines
8.2
Very good
724 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

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.
Asiana Airlines
8.2
Very good
440 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

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.

  • 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 $494 on Air China. Other airlines that offer cheap prices include Turkish Airlines from $555 and Air India from $562 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Thailand (average of $958). Flying from Washington, D.C. to Thailand in December is currently the most expensive (average of $1,574). 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

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Alternative routes for Washington, D.C. to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest$652Average$862FlexibilityNo cancel feeOn-time86%
Air IndiaCheapest$700Average$837FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$921Average$1,108FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$936Average$1,151FlexibilityNo cancel feeOn-time75%
Alaska AirlinesCheapest$936Average$1,240FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$952Average$1,288FlexibilityNo cancel feeOn-time68%
JetBlueCheapest$994Average$1,197FlexibilityNo cancel feeOn-time62%
Korean AirCheapest$1,060Average$1,691FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$1,065Average$1,368FlexibilityNo cancel feeOn-time71%
IndiGoCheapest$1,069Average$1,388FlexibilityNo cancel feeOn-time80%

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