Southeast Asia

$340+ Cheap flights from Washington, D.C. (WAS) to Southeast Asia

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BKK
Dec 6 — Dec 131
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Find flight deals from Washington, D.C. to Southeast Asia

Cheapest flights from Washington, D.C. to Southeast Asia
Explore the most affordable flight options available from Washington, D.C. to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Travelocity deal was found by Cheapflights users on 11/5. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:40 pmBWI - BKK
2 stops24h 30mMultiple Airlines
Tue 12/912:15 pmBKK - BWI
2 stops42h 25mMultiple Airlines
Deal found 11/5$765
This Expedia deal was found by Cheapflights users on 11/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:40 pmBWI - BKK
2 stops24h 30mMultiple Airlines
Wed 12/1712:15 pmBKK - BWI
2 stops42h 25mMultiple Airlines
Deal found 11/5$840
This oojo deal was found by Cheapflights users on 11/6. 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 11/289:10 pmIAD - BKK
1 stop38h 10mEtihad Airways
Sun 12/78:55 amBKK - IAD
1 stop42h 35mEtihad Airways
Deal found 11/6$851
This oojo deal was found by Cheapflights users on 11/5. 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.
Sun 11/99:59 amDCA - BKK
2 stops39h 06mChina Airlines
Tue 11/115:50 pmBKK - DCA
2 stops62h 10mChina Airlines
Deal found 11/5$855
This Etihad Airways deal was found by Cheapflights users on 11/4. 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.
Wed 12/39:10 pmIAD - BKK
1 stop20h 45mEtihad Airways
Tue 3/38:55 amBKK - IAD
1 stop36h 10mEtihad Airways
Deal found 11/4$856
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Fri 11/2810:40 amIAD - BKK
1 stop20h 45mQatar Airways
Mon 12/88:30 pmBKK - IAD
1 stop31h 25mQatar Airways
Deal found 11/4$857
This FlightHub deal was found by Cheapflights users on 11/6. 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.
Sun 11/309:10 pmIAD - BKK
1 stop32h 50mEtihad Airways
Sat 12/208:55 amBKK - IAD
1 stop36h 10mEtihad Airways
Deal found 11/6$860
This oojo deal was found by Cheapflights users on 11/3. 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 11/46:13 pmIAD - BKK
2 stops30h 22mSTARLUX Airlines
Tue 11/111:45 pmBKK - IAD
2 stops28h 38mSTARLUX Airlines
Deal found 11/3$864
This KAYAK deal was found by Cheapflights users on 11/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/289:10 pmIAD - BKK
1 stop32h 50mEtihad Airways
Tue 12/162:55 amBKK - IAD
1 stop24h 35mEtihad Airways
Deal found 11/5$865
This oojo deal was found by Cheapflights users on 11/6. 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.
Sat 11/299:10 pmIAD - BKK
1 stop38h 10mEtihad Airways
Sat 12/138:55 amBKK - IAD
1 stop42h 35mEtihad Airways
Deal found 11/6$867
This FlightHub deal was found by Cheapflights users on 11/3. 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.
Tue 11/46:13 pmIAD - BKK
2 stops30h 22mSTARLUX Airlines
Sun 11/165:40 pmBKK - IAD
2 stops48h 43mSTARLUX Airlines
Deal found 11/3$868
This Gurufare deal was found by Cheapflights users on 11/6. 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 Gurufare 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
Wed 12/102:55 amBKK - IAD
1 stop24h 35mEtihad Airways
Deal found 11/6$869

Cheap flight deals from Washington, D.C. to Southeast Asia

Keep the following information in mind while searching for Washington, D.C. to Southeast Asia flight deals. Data was last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$765
(Travelocity)

One-way from

$340
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,227
Provider with most accurate pricing for Washington, D.C. (WAS)-Manila Ninoy Aquino Intl flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Manila Ninoy Aquino Intl flights.
From Washington, D.C. (WAS) to Southeast Asia
One-way flight from Washington, D.C. (WAS) to Southeast Asia
Highest demand for flights based on searches. 8% potential increase in price ($119 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
Average for round-trip flights in November 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Southeast Asia 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 November 6, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Southeast Asia that are best for you.

Fly from

Washington, D.C.

Fly to

Southeast Asia

Route

Depart

Return

Price

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 2/4

2:35 pm-11:20 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Sun 2/15

7:35 pm-9:05 am

2 stops49h 30m

$872

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 1/14

8:05 pm-6:40 am

1 stop22h 35m

Bangkok Suvarnabhumi

Tue 1/27

3:00 am-3:55 pm

1 stop24h 55m

$923

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Wed 11/26

11:50 am-12:45 am

1 stop24h 55m

Bangkok Suvarnabhumi

Mon 12/8

9:30 pm-9:50 am

1 stop24h 20m

$936

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Tue 1/13

11:50 am-12:55 am

1 stop25h 05m

Bangkok Suvarnabhumi

Tue 1/27

9:30 pm-9:50 am

1 stop24h 20m

$936

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 11/27

7:40 am-12:55 am

2 stops29h 15m

Bangkok Suvarnabhumi

Wed 12/17

9:30 pm-11:37 am

2 stops26h 07m

$947

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 12/2

7:35 am-12:55 am

2 stops29h 20m

Bangkok Suvarnabhumi

Tue 12/16

12:55 am-4:36 pm

2 stops27h 41m

$947

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/8

7:30 am-12:45 am

2 stops29h 15m

Bangkok Suvarnabhumi

Tue 4/7

9:50 am-11:56 pm

2 stops25h 06m

$947

Washington, D.C.Bangkok

IAD - BKK

IADBKK

Washington, D.C. Dulles Intl

Thu 1/15

11:50 am-12:45 am

1 stop24h 55m

Bangkok Suvarnabhumi

Tue 2/3

9:30 pm-7:09 pm

2 stops33h 39m

$947

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 1/20

12:40 pm-11:25 am

3 stops34h 45m

Bangkok Suvarnabhumi

Thu 2/5

4:55 pm-8:59 am

3 stops28h 04m

$948

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 1/19

3:30 pm-11:25 am

3 stops31h 55m

Bangkok Suvarnabhumi

Mon 1/26

4:55 pm-9:58 am

3 stops29h 03m

$948

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia 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 Southeast Asia

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Southeast Asia (average of $137). Flying from Washington, D.C. to Southeast Asia in February is currently the most expensive (average of $818). 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 YJX?

Find hourly flight availability from Washington, D.C. to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

One of the essential ways to save on airfare from Washington, D.C. to Southeast Asia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 17% on airfare.

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

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

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

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. 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 Southeast Asia. Reviews last updated November 6, 2025.
Peruse reviews from past customers who have flown with Korean Air, Qatar Airways, and United Airlines from Washington, D.C. to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Southeast Asia. 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 Southeast Asia?

    There are many flights that can get you from Washington, D.C. to Southeast Asia in 20h 45m. Fly via Etihad Airways, Qatar Airways, or Korean Air to get the fastest option. There are 8792 mi between Washington, D.C. and Southeast Asia. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    One-way options have recently been found by users for as low as $475 on Qatar Airways. Other airlines that offer cheap prices include Japan Airlines from $508 and ANA from $513 one-way.

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

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

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

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

    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 Southeast Asia.

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to Southeast Asia 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 Southeast Asia?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Southeast Asia (average of $137). Flying from Washington, D.C. to Southeast Asia in February is currently the most expensive (average of $818). 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

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Alternative routes for Washington, D.C. to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Washington, D.C. to Southeast Asia

Discover the top 10 airlines that operate flights from Washington, D.C. to Southeast Asia. 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$118Average$160FlexibilityNo cancel feeOn-time65%
FrontierCheapest$162Average$267FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$565Average$854FlexibilityNo cancel feeOn-time67%
Philippine AirlinesCheapest$652Average$1,525FlexibilityNo cancel feeOn-time60%
Air IndiaCheapest$700Average$976FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$756Average$1,290FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$763Average$1,265FlexibilityNo cancel feeOn-time72%
DeltaCheapest$798Average$1,273FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$829Average$1,085FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$846Average$1,348FlexibilityNo cancel feeOn-time81%

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