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Southeast Asia

$331+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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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 April 25, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$683
(FlightHub)

One-way from

$353
(FlightHub)

Popular in

December

Cheapest in

March

Average price

$799
Provider with most accurate pricing for Seattle/Tacoma Intl-Manila Ninoy Aquino Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Manila Ninoy Aquino Intl flights.
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From Washington to Southeast Asia
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One-way flight from Washington to Southeast Asia
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Highest demand for flights based on searches. 8% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 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 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 April 25, 2025.

This FlightHub deal was found by Cheapflights users on 4/24. 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 10/1410:15 amSEA - KUL
1 stop18h 30mSingapore Airlines
Wed 10/2211:00 amKUL - SEA
1 stop36h 45mSingapore Airlines
Deal found 4/24$683
This Trip.com deal was found by Cheapflights users on 4/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:55 pmSEA - KUL
1 stop22h 55mPhilippine Airlines
Sun 11/3011:40 amKUL - SEA
1 stop23h 55mPhilippine Airlines
Deal found 4/24$706
This oojo deal was found by Cheapflights users on 4/25. 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 9/32:15 pmSEA - CRK
1 stop19h 35mAsiana Airlines
Sat 9/202:00 amCRK - SEA
1 stop25h 30mAsiana Airlines
Deal found 4/25$719
This oojo deal was found by Cheapflights users on 4/23. 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 5/41:10 amSEA - SGN
1 stop18h 30mChina Airlines
Tue 5/205:30 pmSGN - SEA
1 stop16h 00mChina Airlines
Deal found 4/23$729
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Sat 8/99:50 amSEA - SGN
2 stops46h 05mUnited Airlines
Fri 9/57:00 amSGN - SEA
3 stops27h 54mUnited Airlines
Deal found 4/25$730
This FlightHub deal was found by Cheapflights users on 4/25. 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 8/67:00 amSEA - SGN
2 stops27h 15mANA
Sat 9/67:00 amSGN - SEA
1 stop21h 25mANA
Deal found 4/25$731
This oojo deal was found by Cheapflights users on 4/24. 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 10/41:10 amSEA - MNL
1 stop23h 40mChina Airlines
Thu 10/304:55 pmMNL - SEA
1 stop17h 20mChina Airlines
Deal found 4/24$734
This ScholarTrip deal was found by Cheapflights users on 4/24. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/410:15 amSEA - MNL
1 stop28h 25mSingapore Airlines
Sun 11/165:05 pmMNL - SEA
1 stop54h 05mSingapore Airlines
Deal found 4/24$737
This eDestinos deal was found by Cheapflights users on 4/25. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/211:20 pmSEA - MNL
1 stop30h 35mKorean Air
Wed 9/311:30 pmMNL - SEA
1 stop29h 10mKorean Air
Deal found 4/25$741
This Gotogate deal was found by Cheapflights users on 4/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/171:40 amSEA - SGN
1 stop18h 00mMultiple Airlines
Tue 9/211:20 amSGN - SEA
1 stop22h 25mMultiple Airlines
Deal found 4/24$743
This Gurufare deal was found by Cheapflights users on 4/25. 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.
Mon 5/56:10 amSEA - SGN
2 stops29h 25mChina Eastern
Tue 5/202:35 amSGN - SEA
2 stops28h 10mChina Eastern
Deal found 4/25$747
This Gurufare deal was found by Cheapflights users on 4/25. 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.
Wed 9/102:15 pmSEA - SGN
1 stop18h 30mAsiana Airlines
Thu 9/1812:05 amSGN - SEA
1 stop26h 25mAsiana Airlines
Deal found 4/25$755

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 April 25, 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

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

Tue 10/14

10:15 am-7:45 pm

1 stop18h 30m

Kuala Lumpur Intl

Wed 10/22

11:00 am-8:45 am

1 stop36h 45m

$683

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

Sun 10/12

11:35 pm-3:25 pm

1 stop24h 50m

Kuala Lumpur Intl

Wed 10/22

12:25 pm-7:15 pm

1 stop21h 50m

$709

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sun 5/4

1:10 am-9:40 am

1 stop18h 30m

Ho Chi Minh City

Tue 5/20

5:30 pm-7:30 pm

1 stop16h 00m

$729

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sun 5/4

5:13 pm-12:15 am

2 stops41h 02m

Ho Chi Minh City

Wed 5/21

11:15 pm-9:58 pm

2 stops36h 43m

$730

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Sat 10/4

1:10 am-3:50 pm

1 stop23h 40m

Manila Ninoy Aquino Intl

Thu 10/30

4:55 pm-7:15 pm

1 stop17h 20m

$734

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Sat 10/4

10:15 am-5:40 am

1 stop28h 25m

Manila Ninoy Aquino Intl

Sun 11/16

5:05 pm-7:10 am

1 stop54h 05m

$737

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Fri 5/9

7:00 am-9:55 pm

2 stops24h 55m

Ho Chi Minh City

Mon 5/12

11:15 pm-2:25 pm

1 stop29h 10m

$738

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Thu 8/21

1:20 pm-10:55 am

1 stop30h 35m

Manila Ninoy Aquino Intl

Wed 9/3

11:30 pm-1:40 pm

1 stop29h 10m

$741

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Mon 5/5

6:10 am-1:35 am

2 stops29h 25m

Ho Chi Minh City

Tue 5/20

2:35 am-4:45 pm

2 stops28h 10m

$747

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sun 5/4

2:15 pm-10:45 pm

1 stop18h 30m

Ho Chi Minh City

Tue 5/20

12:05 am-12:30 pm

1 stop26h 25m

$759

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 60 results
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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 $958). 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 April 25, 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 April 25, 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
157 reviews

Overall

9.1

Boarding

9.0

Food

8.9

Crew

9.3

Entertainment

9.0

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
157 reviews
STARLUX Airlines
9.1
Wonderful
157 reviews

Overall

9.1

Boarding

9.0

Food

8.9

Crew

9.3

Entertainment

9.0

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,180 reviews
STARLUX Airlines
9.1
Wonderful
157 reviews

Overall

9.1

Boarding

9.0

Food

8.9

Crew

9.3

Entertainment

9.0

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,063 reviews
STARLUX Airlines
9.1
Wonderful
157 reviews

Overall

9.1

Boarding

9.0

Food

8.9

Crew

9.3

Entertainment

9.0

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,456 reviews
STARLUX Airlines
9.1
Wonderful
157 reviews

Overall

9.1

Boarding

9.0

Food

8.9

Crew

9.3

Entertainment

9.0

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
727 reviews
STARLUX Airlines
9.1
Wonderful
157 reviews

Overall

9.1

Boarding

9.0

Food

8.9

Crew

9.3

Entertainment

9.0

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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 $353. Users have also found prices from $403 and $415 on ANA 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 $958). 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

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Alternative routes for Washington to Southeast Asia

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 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$1,140FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$605Average$1,037FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$631Average$839FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$691Average$1,122FlexibilityNo cancel feeOn-time69%
Philippine AirlinesCheapest$692Average$982FlexibilityNo cancel feeOn-time60%
Korean AirCheapest$695Average$1,083FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$716Average$1,302FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$724Average$881FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$729Average$1,134FlexibilityNo cancel feeOn-time67%
ANACheapest$745Average$993FlexibilityNo cancel feeOn-time80%

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