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Southeast Asia

$328+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$700
(FlightHub)

One-way from

$328
(FlightHub)

Popular in

June

Cheapest in

October

Average price

$839
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. 20% potential increase in price ($268 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 22, 2025.

This CrystalTravel deal was found by Cheapflights users on 2/20. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2811:30 pmSEA - BKK
1 stop28h 10mPhilippine Airlines
Sun 10/121:30 pmBKK - SEA
1 stop19h 50mPhilippine Airlines
Deal found 2/20$689
This FlightHub deal was found by Cheapflights users on 2/20. 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 3/3010:15 amSEA - BKK
1 stop19h 45mSingapore Airlines
Tue 5/68:10 pmBKK - SEA
2 stops34h 30mSingapore Airlines
Deal found 2/20$700
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:45 pmSEA - SIN
1 stop26h 20mAir Canada
Tue 9/239:10 amSIN - SEA
1 stop24h 26mAir Canada
Deal found 2/20$706
This oojo deal was found by Cheapflights users on 2/21. 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 4/2012:50 pmSEA - MNL
1 stop31h 05mKorean Air
Sun 5/1811:30 pmMNL - SEA
1 stop26h 10mKorean Air
Deal found 2/21$707
This oojo deal was found by Cheapflights users on 2/21. 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 3/2611:35 pmSEA - KUL
1 stop34h 45mPhilippine Airlines
Sat 4/262:15 amKUL - SEA
1 stop32h 05mPhilippine Airlines
Deal found 2/21$710
This FlightHub deal was found by Cheapflights users on 2/21. 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 4/810:15 amSEA - MNL
1 stop40h 10mSingapore Airlines
Tue 4/226:30 pmMNL - SEA
2 stops37h 10mSingapore Airlines
Deal found 2/21$711
This oojo deal was found by Cheapflights users on 2/21. 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 4/712:50 pmSEA - SGN
1 stop33h 45mKorean Air
Mon 4/1411:45 pmSGN - SEA
1 stop24h 55mKorean Air
Deal found 2/21$712
This oojo deal was found by Cheapflights users on 2/20. 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 3/1911:35 pmSEA - SIN
1 stop19h 00mPhilippine Airlines
Wed 3/262:10 pmSIN - SEA
1 stop20h 00mPhilippine Airlines
Deal found 2/20$713
This CrystalTravel deal was found by Cheapflights users on 2/20. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1012:00 pmSEA - BKK
1 stop22h 45mKorean Air
Mon 3/249:30 pmBKK - SEA
1 stop26h 30mKorean Air
Deal found 2/20$716
This Gotogate deal was found by Cheapflights users on 2/21. 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.
Wed 4/211:30 pmSEA - DPS
1 stop33h 25mPhilippine Airlines
Tue 4/812:55 amDPS - SEA
1 stop33h 25mPhilippine Airlines
Deal found 2/21$717
This oojo deal was found by Cheapflights users on 2/19. 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 3/611:00 amSEA - SIN
1 stop21h 10mKorean Air
Sun 3/2310:30 pmSIN - SEA
1 stop26h 30mKorean Air
Deal found 2/19$720
This Gotogate deal was found by Cheapflights users on 2/21. 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 4/612:50 pmSEA - HAN
1 stop31h 50mKorean Air
Sun 4/1312:00 pmHAN - SEA
1 stop36h 40mKorean Air
Deal found 2/21$721

Find flights from Washington to Southeast Asia within your budget

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 February 22, 2025.

Fly from

Washington

Fly to

Southeast Asia

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/20

11:30 pm-12:15 pm

1 stop22h 45m

Bangkok Suvarnabhumi

Sat 4/26

6:40 pm-7:20 pm

1 stop38h 40m

$695

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/30

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Tue 5/6

8:10 pm-4:40 pm

2 stops34h 30m

$700

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Sun 4/20

12:50 pm-10:55 am

1 stop31h 05m

Manila Ninoy Aquino Intl

Sun 5/18

11:30 pm-10:40 am

1 stop26h 10m

$707

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

Wed 3/26

11:35 pm-1:20 am

1 stop34h 45m

Kuala Lumpur Intl

Sat 4/26

2:15 am-7:20 pm

1 stop32h 05m

$710

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Tue 4/8

10:15 am-5:25 pm

1 stop40h 10m

Manila Ninoy Aquino Intl

Tue 4/22

6:30 pm-4:40 pm

2 stops37h 10m

$711

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Mon 4/7

12:50 pm-12:35 pm

1 stop33h 45m

Ho Chi Minh City

Mon 4/14

11:45 pm-10:40 am

1 stop24h 55m

$712

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Wed 3/19

11:35 pm-9:35 am

1 stop19h 00m

Singapore Changi

Wed 3/26

2:10 pm-7:10 pm

1 stop20h 00m

$713

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 3/10

12:00 pm-12:45 am

1 stop22h 45m

Bangkok Suvarnabhumi

Mon 3/24

9:30 pm-10:00 am

1 stop26h 30m

$716

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sat 5/3

1:10 am-9:40 am

1 stop18h 30m

Ho Chi Minh City

Sun 5/25

10:50 am-7:30 pm

1 stop22h 40m

$721

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/9

1:45 pm-12:20 am

1 stop20h 35m

Bangkok Suvarnabhumi

Mon 6/9

1:10 am-12:30 pm

1 stop25h 20m

$725

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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.

Travel insights for flights from Washington to Southeast Asia

Get recent, data-driven insights about flights from Washington to Southeast Asia including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from State of Washington to Southeast Asia (average of $976). Flying from State of Washington to Southeast Asia in June is currently the most expensive (average of $1,580). 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 February 22, 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 February 22, 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
140 reviews

Boarding

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Entertainment

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Entertainment

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air
8.4
Very good
1,200 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Entertainment

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air
8.4
Very good
1,036 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Entertainment

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

ANA
8.4
Very good
836 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Entertainment

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Boarding

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Entertainment

9.1

Overall

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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 $328. Users have also found prices from $377 and $383 on Japan Airlines and American 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, February is the cheapest month in which you can book a flight from State of Washington to Southeast Asia (average of $976). Flying from State of Washington to Southeast Asia in June is currently the most expensive (average of $1,580). 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$610Average$1,056FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$636Average$874FlexibilityNo cancel feeOn-time76%
STARLUX AirlinesCheapest$657Average$969FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$705Average$1,155FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$707Average$1,148FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$710Average$840FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$721Average$1,176FlexibilityNo cancel feeOn-time69%
DeltaCheapest$736Average$1,205FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$736Average$888FlexibilityNo cancel feeOn-time70%
China EasternCheapest$755Average$872FlexibilityNo cancel feeOn-time62%
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