What are the cheapest airlines to fly from State of Washington to Southeast Asia one-way?

For one-way options, check prices for China Airlines. According to our data, you can fly for as low as $401. Users have also found prices from $402 and $416 on Singapore Airlines and Asiana Airlines, respectively.

How far in advance should I book a flight from State of Washington to Southeast Asia?

To save on the cost of your flight from State of Washington to Southeast Asia, book at least 56 days before your planned departure. Booking around this time can save you about 22% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $938 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $972.

What is the cheapest month to fly from State of Washington to Southeast Asia?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, March can be a great choice for travel to Southeast Asia. Flights to Southeast Asia from State of Washington in March are about $1,005 on average during March, but can be found for as low as $693.

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.

$335+ Flights from Washington to Southeast Asia

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Cheap flight deals from Washington to Southeast Asia

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$716 (StudentUniverse)
One-way from	$401 (Mytrip)
Popular in	December
Cheapest in	March
Average price	$841

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

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($81 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($41 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 2, 2025.

Thu 10/210:15 amSEA - CGK

1 stop19h 05mSingapore Airlines

Sun 10/125:25 amCGK - SEA

1 stop17h 20mSingapore Airlines

Deal found 4/1

$647

Sat 9/610:15 amSEA - HAN

1 stop35h 15mSingapore Airlines

Tue 9/2312:40 pmHAN - SEA

2 stops34h 14mSingapore Airlines

Deal found 4/1

$670

Sun 8/2411:35 pmSEA - KUL

1 stop24h 50mPhilippine Airlines

Sat 9/272:15 amKUL - SEA

1 stop32h 00mPhilippine Airlines

Deal found 4/1

$709

Wed 4/912:50 pmSEA - MNL

1 stop31h 05mKorean Air

Tue 5/131:10 amMNL - SEA

1 stop24h 30mKorean Air

Deal found 4/1

$716

Sun 4/271:10 amSEA - MNL

1 stop23h 40mChina Airlines

Mon 5/264:50 pmMNL - SEA

1 stop17h 40mChina Airlines

Deal found 4/1

$717

Sun 9/76:45 amSEA - SGN

2 stops27h 30mUnited Airlines

Mon 9/297:00 amSGN - SEA

3 stops25h 17mUnited Airlines

Deal found 4/2

$726

Fri 11/73:40 pmSEA - SGN

1 stop41h 35mANA

Thu 11/2011:05 pmSGN - SEA

1 stop29h 15mANA

Deal found 4/1

$728

Wed 9/37:04 amSEA - HAN

2 stops25h 11mUnited Airlines

Fri 9/1911:35 pmHAN - SEA

2 stops35h 19mUnited Airlines

Deal found 3/31

$731

Sun 10/510:15 amSEA - MNL

1 stop28h 25mSingapore Airlines

Sat 10/256:30 pmMNL - SEA

1 stop28h 40mSingapore Airlines

Deal found 3/31

$731

Wed 4/162:15 pmSEA - SGN

1 stop18h 30mAsiana Airlines

Thu 5/812:05 amSGN - SEA

1 stop26h 25mAsiana Airlines

Deal found 4/1

$735

Wed 9/32:15 pmSEA - HAN

1 stop32h 00mAsiana Airlines

Fri 9/1911:30 pmHAN - SEA

1 stop27h 00mAsiana Airlines

Deal found 4/1

$736

Sat 4/121:10 amSEA - SGN

1 stop18h 30mChina Airlines

Tue 5/610:50 amSGN - SEA

1 stop22h 40mChina Airlines

Deal found 4/1

$736

Best flights from Washington to Southeast Asia
Discover carefully curated flight deals from Washington to Southeast Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2025.

Sun 4/2012:50 pmSEA - MNL

1 stop18h 15mKorean Air

Sun 5/1111:30 pmMNL - SEA

1 stop26h 10mKorean Air

Deal found 4/1

$716

Sun 4/271:10 amSEA - MNL

1 stop23h 40mChina Airlines

Mon 5/264:50 pmMNL - SEA

1 stop17h 40mChina Airlines

Deal found 4/1

$717

Sun 5/45:15 amSEA - SGN

2 stops29h 00mUnited Airlines

Wed 5/217:00 amSGN - SEA

3 stops25h 30mUnited Airlines

Deal found 4/1

$726

Sat 4/194:30 pmSEA - SGN

1 stop39h 25mANA

Fri 5/167:00 amSGN - SEA

2 stops22h 58mANA

Deal found 4/1

$729

Wed 4/162:15 pmSEA - SGN

1 stop18h 30mAsiana Airlines

Thu 5/812:05 amSGN - SEA

1 stop26h 25mAsiana Airlines

Deal found 4/1

$735

Sat 8/1610:15 amSEA - MNL

1 stop40h 10mSingapore Airlines

Tue 9/21:05 pmMNL - SEA

2 stops34h 49mSingapore Airlines

Deal found 4/1

$735

Sun 4/1312:40 pmSEA - SGN

1 stop33h 55mDelta

Fri 5/91:55 pmSGN - SEA

1 stop37h 40mDelta

Deal found 4/1

$746

Sun 8/2411:35 pmSEA - CGK

1 stop21h 15mPhilippine Airlines

Sat 9/612:55 amCGK - SEA

1 stop32h 20mPhilippine Airlines

Deal found 3/31

$751

Mon 5/55:35 amSEA - MNL

1 stop33h 45mAir Canada

Fri 5/169:25 amMNL - SEA

1 stop27h 48mAir Canada

Deal found 3/30

$753

Thu 5/12:55 pmSEA - MNL

1 stop24h 25mMultiple Airlines

Thu 5/810:30 amMNL - SEA

2 stops18h 43mMultiple Airlines

Deal found 4/1

$777

Wed 4/167:10 amSEA - SGN

2 stops28h 25mChina Eastern

Wed 5/72:35 amSGN - SEA

2 stops27h 33mChina Eastern

Deal found 4/1

$794

Mon 4/211:30 amSEA - SGN

1 stop30h 30mEVA Air

Mon 5/191:50 amSGN - SEA

1 stop31h 40mEVA Air

Deal found 4/1

$795

Last-minute flights from Washington to Southeast Asia
Discover last-minute flight deals from Washington to Southeast Asia. Data last updated April 2, 2025 and is based on user searches.

Sun 4/61:10 amSEA - MNL

1 stop23h 40mChina Airlines

Mon 5/510:35 amMNL - SEA

1 stop23h 55mChina Airlines

Deal found 3/31

$764

Mon 4/71:10 amSEA - BKK

1 stop21h 00mChina Airlines

Thu 5/810:50 amBKK - SEA

1 stop22h 40mChina Airlines

Deal found 4/1

$770

Mon 4/77:05 pmSEA - MNL

2 stops25h 40mAir Canada

Mon 5/59:25 amMNL - SEA

1 stop27h 48mAir Canada

Deal found 3/31

$802

Mon 4/71:15 amSEA - BKK

1 stop20h 45mSTARLUX Airlines

Sun 4/135:50 pmBKK - SEA

1 stop36h 20mSTARLUX Airlines

Deal found 4/1

$846

Tue 4/810:25 amSEA - BKK

2 stops29h 35mANA

Tue 4/151:55 pmBKK - SEA

1 stop38h 30mANA

Deal found 4/1

$810

Tue 4/82:15 pmSEA - BKK

1 stop18h 55mAsiana Airlines

Wed 5/71:20 amBKK - SEA

1 stop25h 10mAsiana Airlines

Deal found 4/1

$856

Wed 4/912:50 pmSEA - MNL

1 stop31h 05mKorean Air

Tue 5/131:10 amMNL - SEA

1 stop24h 30mKorean Air

Deal found 4/1

$716

Wed 4/912:50 pmSEA - MNL

1 stop31h 05mKorean Air

Wed 5/2111:30 pmMNL - SEA

1 stop26h 10mKorean Air

Deal found 4/1

$716

Sat 4/121:10 amSEA - SGN

1 stop25h 10mChina Airlines

Thu 5/810:50 amSGN - SEA

1 stop22h 40mChina Airlines

Deal found 4/1

$726

Sat 4/121:30 pmSEA - SGN

2 stops33h 05mKorean Air

Fri 5/911:45 pmSGN - SEA

1 stop24h 55mKorean Air

Deal found 4/1

$819

Sat 4/121:10 amSEA - SGN

1 stop18h 30mChina Airlines

Tue 5/610:50 amSGN - SEA

1 stop22h 40mChina Airlines

Deal found 4/1

$736

Sun 4/1312:50 pmSEA - CEB

1 stop19h 40mKorean Air

Wed 5/141:00 amCEB - SEA

1 stop24h 40mKorean Air

Deal found 4/1

$760

One-way flights from Washington to Southeast Asia
Search for one-way flight options from Washington to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated April 2, 2025.

Sun 5/41:10 amSEA - SGN

1 stop25h 10mChina Airlines

Deal found 4/1

$401

Thu 5/110:15 amSEA - SGN

1 stop34h 40mSingapore Airlines

Deal found 4/1

$402

Wed 4/232:15 pmSEA - SGN

1 stop18h 30mAsiana Airlines

Deal found 4/1

$416

Sun 4/279:50 amSEA - BKK

1 stop20h 10mSingapore Airlines

Deal found 4/1

$418

Wed 4/912:50 pmSEA - SGN

1 stop19h 15mKorean Air

Deal found 4/1

$426

Sun 4/201:10 amSEA - CEB

1 stop18h 55mChina Airlines

Deal found 4/2

$426

Sun 4/131:10 amSEA - MNL

1 stop23h 40mChina Airlines

Deal found 4/1

$426

Mon 4/77:05 pmSEA - MNL

2 stops25h 40mAir Canada

Deal found 4/2

$427

Sun 4/201:10 amSEA - BKK

1 stop18h 35mChina Airlines

Deal found 4/1

$428

Wed 4/236:00 amSEA - MNL

2 stops25h 55mMultiple Airlines

Deal found 4/1

$435

Mon 4/214:30 pmSEA - BKK

1 stop23h 45mQatar Airways

Deal found 4/1

$438

Tue 5/610:00 amSEA - BKK

2 stops30h 00mANA

Deal found 4/1

$439

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Sat 9/6

10:15 am-11:30 am

1 stop35h 15m

Hanoi Noibai

Tue 9/23

12:40 pm-8:54 am

2 stops34h 14m

$670

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

Sun 8/24

11:35 pm-3:25 pm

1 stop24h 50m

Kuala Lumpur Intl

Sun 9/28

12:25 pm-7:15 pm

1 stop21h 50m

$709

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Wed 4/9

12:50 pm-10:55 am

1 stop31h 05m

Manila Ninoy Aquino Intl

Wed 5/21

11:30 pm-10:40 am

1 stop26h 10m

$716

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Sun 4/27

1:10 am-3:50 pm

1 stop23h 40m

Manila Ninoy Aquino Intl

Mon 5/26

4:50 pm-7:30 pm

1 stop17h 40m

$717

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sun 9/7

6:45 am-12:15 am

2 stops27h 30m

Ho Chi Minh City

Mon 9/29

7:00 am-6:17 pm

3 stops25h 17m

$726

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 9/3

7:04 am-10:15 pm

2 stops25h 11m

Hanoi Noibai

Fri 9/19

11:35 pm-8:54 pm

2 stops35h 19m

$731

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Wed 4/16

2:15 pm-10:45 pm

1 stop18h 30m

Ho Chi Minh City

Thu 5/8

12:05 am-12:30 pm

1 stop26h 25m

$735

SeattleHanoi

SEA - HAN

SEAHAN

Seattle/Tacoma Intl

Wed 9/3

2:15 pm-12:15 pm

1 stop32h 00m

Hanoi Noibai

Fri 9/19

11:30 pm-12:30 pm

1 stop27h 00m

$736

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sat 4/12

1:10 am-9:40 am

1 stop18h 30m

Ho Chi Minh City

Tue 5/6

10:50 am-7:30 pm

1 stop22h 40m

$736

SeattleCebu City

SEA - CEB

SEACEB

Seattle/Tacoma Intl

Thu 9/4

10:15 am-2:45 pm

1 stop37h 30m

Cebu City Mactan Intl

Thu 9/18

3:35 pm-8:54 am

2 stops32h 19m

$736

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 60 results

...

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?

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

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

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

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

146 reviews

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

146 reviews

STARLUX Airlines

9.1

Wonderful

146 reviews

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

1,170 reviews

STARLUX Airlines

9.1

Wonderful

146 reviews

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

1,052 reviews

STARLUX Airlines

9.1

Wonderful

146 reviews

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

146 reviews

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

8.3

Very good

830 reviews

STARLUX Airlines

9.1

Wonderful

146 reviews

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

What are the cheapest airlines to fly from State of Washington to Southeast Asia one-way?
For one-way options, check prices for China Airlines. According to our data, you can fly for as low as $401. Users have also found prices from $402 and $416 on Singapore Airlines and Asiana 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Washington to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$457	Average$1,156	FlexibilityNo cancel fee	On-timeN/A
Singapore Airlines	Cheapest$609	Average$1,054	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$634	Average$864	FlexibilityNo cancel fee	On-time76%
United Airlines	Cheapest$691	Average$1,140	FlexibilityNo cancel fee	On-time69%
Philippine Airlines	Cheapest$693	Average$846	FlexibilityNo cancel fee	On-time60%
Korean Air	Cheapest$695	Average$1,095	FlexibilityNo cancel fee	On-time81%
Japan Airlines	Cheapest$724	Average$1,166	FlexibilityNo cancel fee	On-time79%
China Airlines	Cheapest$736	Average$892	FlexibilityNo cancel fee	On-time70%
Air Canada	Cheapest$753	Average$1,186	FlexibilityNo cancel fee	On-time67%
ANA	Cheapest$754	Average$993	FlexibilityNo cancel fee	On-time80%

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$335+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Southeast Asia with Cheapflights

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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 2, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Washington to Southeast Asia

Cheapest flights from Washington to Southeast AsiaExplore 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 2, 2025.

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 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Southeast Asia that are best for you.

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.

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?

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 2, 2025.

Rainfall in Southeast Asia by month

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

Temperature in Southeast Asia by month

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

Reviews of airlines servicing Southeast Asia

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.

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?

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

How can I find direct flights from Washington to Southeast Asia?

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

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

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.

Top 10 airlines flying from Washington to Southeast Asia

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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 2, 2025.