HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southeast Asia

$282+ Cheap flights from Washington 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jun 15 — Jun 221
Sun 6/15
Sun 6/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Southeast Asia 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.

Cheap flight deals from Washington to Southeast Asia

Keep the following information in mind while searching for Washington to Southeast Asia flight deals. Data was last updated June 10, 2025.

Round-trip from

$734
(oojo)

One-way from

$282
(FlightHub)

Popular in

December

Cheapest in

April

Average price

$1,335
From Washington to Southeast Asia
Search Deals
One-way flight from Washington to Southeast Asia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Washington to Southeast Asia

Cheapest flights from Washington to Southeast Asia
Explore the most affordable flight options available from Washington to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2025.

This FlightHub deal was found by Cheapflights users on 6/9. 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 10/2410:15 amSEA - DAD
1 stop34h 45mSingapore Airlines
Mon 11/311:50 amDAD - SEA
1 stop34h 20mSingapore Airlines
Deal found 6/9$602
This oojo deal was found by Cheapflights users on 6/8. 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 8/311:40 amSEA - DAD
1 stop24h 55mChina Airlines
Tue 9/305:35 pmDAD - SEA
1 stop15h 45mChina Airlines
Deal found 6/8$734
This oojo deal was found by Cheapflights users on 6/8. 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.
Wed 11/2612:10 amSEA - DAD
1 stop30h 25mAsiana Airlines
Sun 12/711:05 pmDAD - SEA
1 stop29h 50mAsiana Airlines
Deal found 6/8$766
This Bravofly deal was found by Cheapflights users on 6/9. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:30 pmSEA - DAD
2 stops29h 55mANA
Sat 10/251:10 amDAD - SEA
2 stops29h 05mANA
Deal found 6/9$769
This FlightHub deal was found by Cheapflights users on 6/8. 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 11/2810:00 amSEA - DAD
2 stops36h 15mMultiple Airlines
Fri 12/512:35 amDAD - SEA
1 stop27h 45mMultiple Airlines
Deal found 6/8$777
This oojo deal was found by Cheapflights users on 6/10. 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.
Thu 11/2012:10 amSEA - BKK
1 stop30h 55mAsiana Airlines
Sun 12/711:55 pmBKK - SEA
1 stop29h 00mAsiana Airlines
Deal found 6/10$781
This FlightHub deal was found by Cheapflights users on 6/10. 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 8/288:08 amSEA - BKK
2 stops24h 52mJapan Airlines
Thu 9/118:05 amBKK - SEA
1 stop16h 20mJapan Airlines
Deal found 6/10$782
This oojo deal was found by Cheapflights users on 6/10. 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 8/121:15 amSEA - BKK
1 stop25h 25mSTARLUX Airlines
Mon 9/11:10 pmBKK - SEA
1 stop17h 00mSTARLUX Airlines
Deal found 6/10$784
This STARLUX Airlines deal was found by Cheapflights users on 6/8. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:45 pmSEA - DAD
1 stop26h 35mSTARLUX Airlines
Tue 12/96:30 pmDAD - SEA
1 stop35h 35mSTARLUX Airlines
Deal found 6/8$785
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/84:30 pmSEA - BKK
1 stop22h 05mUnited Airlines
Tue 10/79:35 amBKK - SEA
1 stop18h 50mUnited Airlines
Deal found 6/9$786
This FlightHub deal was found by Cheapflights users on 6/10. 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 9/2110:15 amSEA - BKK
1 stop38h 10mSingapore Airlines
Sun 10/59:20 amBKK - SEA
2 stops28h 39mSingapore Airlines
Deal found 6/10$787
This KAYAK deal was found by Cheapflights users on 6/10. 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.
Tue 8/191:45 pmSEA - BKK
2 stops26h 15mANA
Wed 8/279:35 amBKK - SEA
1 stop18h 50mANA
Deal found 6/10$788

Cheapflights Fare Finder

Customize your flight search to find flights from Washington 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 June 10, 2025.
Use the filters below to find and compare flights from Washington to Southeast Asia that are best for you.

Fly from

Washington

Fly to

Southeast Asia

Route

Depart

Return

Price

SeattleDa Nang

SEA - DAD

SEADAD

Seattle/Tacoma Intl

Sun 8/31

1:40 am-4:35 pm

1 stop24h 55m

Da Nang

Tue 9/30

5:35 pm-7:20 pm

1 stop15h 45m

$734

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 11/20

12:10 am-10:05 pm

1 stop30h 55m

Bangkok Suvarnabhumi

Sun 12/7

11:55 pm-1:55 pm

1 stop29h 00m

$781

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 8/28

8:08 am-11:00 pm

2 stops24h 52m

Bangkok Suvarnabhumi

Thu 9/11

8:05 am-10:25 am

1 stop16h 20m

$782

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/12

1:15 am-4:40 pm

1 stop25h 25m

Bangkok Suvarnabhumi

Mon 9/1

1:10 pm-4:10 pm

1 stop17h 00m

$784

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/8

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 10/7

9:35 am-2:25 pm

1 stop18h 50m

$786

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 9/21

10:15 am-2:25 pm

1 stop38h 10m

Bangkok Suvarnabhumi

Sun 10/5

9:20 am-11:59 pm

2 stops28h 39m

$787

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/19

1:45 pm-6:00 am

2 stops26h 15m

Bangkok Suvarnabhumi

Wed 8/27

9:35 am-2:25 pm

1 stop18h 50m

$788

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 9/10

7:28 am-11:25 pm

2 stops25h 57m

Bangkok Suvarnabhumi

Sun 9/21

2:35 am-10:40 am

1 stop22h 05m

$789

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 11/13

12:10 am-1:05 pm

1 stop21h 55m

Bangkok Suvarnabhumi

Wed 11/26

2:35 am-6:15 pm

1 stop30h 40m

$797

SeattleBacolod

SEA - BCD

SEABCD

Seattle/Tacoma Intl

Mon 8/25

2:30 pm-10:20 pm

2 stops40h 50m

Bacolod

Mon 9/8

6:25 pm-12:30 pm

2 stops33h 05m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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

Best time to book a flight from Washington to Southeast Asia

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

What is the cheapest month to book a flight from State of Washington to Southeast Asia?

Currently, March is the cheapest month in which you can book a flight from State of Washington to Southeast Asia (average of $953). Flying from State of Washington to Southeast Asia 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 WA to YJX?

Find hourly flight availability from Washington 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 June 10, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Southeast Asia as you normally would.

Rainfall in Southeast Asia by month

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

In terms of precipitation, rainfall in Southeast Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Southeast Asia when rainfall is around 0.4 in.

Temperature in Southeast Asia by month

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

If weather is an important factor for your trip to Southeast Asia, 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 84.2 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 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 June 10, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air and Korean Air from Washington to Southeast Asia have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,489 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Related info for your journey

Find useful and relevant information for your journey from Washington to Southeast Asia. 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 State of Washington to Southeast Asia one-way?

    For one-way options, check prices for Singapore Airlines. According to our data, you can fly for as low as $282. Users have also found prices from $359 and $376 on Asiana Airlines and China Airlines, respectively.

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

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

  • How can I find direct flights from Washington 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 to Southeast Asia.

  • Can I find deals for business class flights from Washington to Southeast Asia?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Southeast Asia?

    Currently, March is the cheapest month in which you can book a flight from State of Washington to Southeast Asia (average of $953). Flying from State of Washington to Southeast Asia 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

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 to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Haneda flights
Los Angeles to Narita flights
John F Kennedy Intl to Haneda flights
Newark to Haneda flights
Seattle to Narita flights
Newark to Narita flights
San Francisco to Haneda flights
San Francisco to Narita flights
Seattle to Haneda flights
John F Kennedy Intl to Suvarnabhumi flights
Los Angeles to Manila flights
John F Kennedy Intl to Narita flights
Dallas/Fort Worth to Narita flights
Los Angeles to Suvarnabhumi flights
Dallas/Fort Worth to Haneda flights
San Francisco to Manila flights
Hobby to Haneda flights
Dulles Intl to Haneda flights
O'Hare Intl to Narita flights
LaGuardia to Haneda flights
LaGuardia to Narita flights
John F Kennedy Intl to Hong Kong flights
Seattle to Suvarnabhumi flights
Newark to Suvarnabhumi flights
O'Hare Intl to Haneda flights
Ontario to Narita flights
San Francisco to New Delhi flights
George Bush Intcntl to Haneda flights
Boston to Narita flights
San Francisco to Hong Kong flights
Los Angeles to Incheon Intl flights
Dallas/Fort Worth to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
Newark to New Delhi flights
Seattle to Incheon Intl flights
Hobby to Narita flights
John F Kennedy Intl to Incheon Intl flights
San Francisco to Suvarnabhumi flights
Atlanta to Haneda flights
Seattle to Taiwan Taoyuan Intl flights
John F Kennedy Intl to Manila flights
Dulles Intl to Narita flights
John F Kennedy Intl to Taiwan Taoyuan Intl flights
Los Angeles to Ho Chi Minh City flights
George Bush Intcntl to Narita flights
John F Kennedy Intl to Hongqiao Intl flights
Los Angeles to Taiwan Taoyuan Intl flights
San Francisco to Ho Chi Minh City flights
San Francisco to Taiwan Taoyuan Intl flights
John F Kennedy Intl to Mumbai flights

Top 10 airlines flying from Washington to Southeast Asia

Discover the top 10 airlines that operate flights from Washington 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 June 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$248Average$1,107FlexibilityNo cancel feeOn-time77%
DeltaCheapest$433Average$1,083FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$589Average$1,024FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$632Average$831FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$682Average$1,010FlexibilityNo cancel feeOn-time60%
ANACheapest$688Average$972FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$691Average$1,037FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$694Average$1,053FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$703Average$1,242FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$716Average$900FlexibilityNo cancel feeOn-time70%

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.