How many flights depart from State of Washington to Southeast Asia on average per week?

The number of flights available between State of Washington and Southeast Asia is 8 per week as of February 2026. The most frequent departure day is Fri, with 25% of weekly flights leaving on this day.

How long is the flight from State of Washington to Southeast Asia?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Southeast Asia, then you can expect flight times to average 9h 15m and 11h 59m, respectively.

What is the cheapest airline that flies from Washington to Southeast Asia?

Singapore Airlines, United Airlines, and Philippine Airlines are the most popular carriers operating from Washington to Southeast Asia

What airlines fly to Southeast Asia?

Asiana Airlines, EVA Air and Philippine Airlines are the top three most popular airlines that fly to Southeast Asia from State of Washington according to our data. Asiana Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 17 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

How many flights depart from State of Washington to Southeast Asia on average per day?

As of February 2026, 1 flights take off from State of Washington and land in Southeast Asia each day. The most common flight departure time for this route is 8:00AM, with 62% of daily flights taking off at noon.

When did momondo last update prices for flights from Washington to Southeast Asia?

Prices for flights from Washington to Southeast Asia are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Southeast Asia?

There are 17 operators available for flights from Washington to Southeast Asia as of February 2026.

How old do you have to be to fly from Washington to Southeast Asia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$281 Cheap Flights from Washington to Southeast Asia in 2026

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Find the cheapest flights from Washington to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 am - 2:50 pm

SEA

CEB

37h 35m

1 stop

3:40 pm - 7:10 am

CEB

SEA

31h 30m

1 stop

$517Singapore Airlines

Sun, May 17 - Sat, Nov 14

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

9:00 am - 8:45 am

SIN

SEA

14h 45mnonstop

$525Singapore Airlines

Thu, Apr 23 - Thu, Apr 30

12:55 am - 9:30 pm

SEA

SIN

29h 35m

1 stop

10:50 pm - 2:55 pm

SIN

SEA

31h 05m

1 stop

$612Asiana Airlines

Thu, Apr 16 - Sun, Apr 26

4:30 pm - 6:40 am

SEA

SIN

23h 10m

1 stop

11:05 am - 2:25 pm

SIN

SEA

18h 20m

1 stop

$617ANA

Thu, Aug 20 - Wed, Aug 26

12:50 pm - 11:30 pm

SEA

CEB

19h 40m

1 stop

1:00 am - 11:00 am

CEB

SEA

25h 00m

1 stop

$621Korean Air

Mon, May 4 - Tue, Jun 2

12:50 pm - 11:30 pm

SEA

CEB

19h 40m

1 stop

1:00 am - 3:05 pm

CEB

SEA

29h 05m

2 stops

$632Korean Air

Mon, May 4 - Tue, Jun 2

11:45 am - 10:05 am

SEA

SGN

32h 20m

1 stop

6:20 pm - 10:05 am

SGN

SEA

29h 45m

1 stop

$642Cathay Pacific

Mon, Apr 27 - Sun, May 24

12:55 am - 10:40 am

SEA

BKK

19h 45m

1 stop

1:20 am - 2:55 pm

BKK

SEA

27h 35m

1 stop

$643Asiana Airlines

Sun, Apr 26 - Sun, May 10

11:45 am - 5:20 pm

SEA

SGN

39h 35m

1 stop

7:10 am - 10:05 am

SGN

SEA

16h 55m

1 stop

$645Cathay Pacific

Mon, Apr 6 - Thu, May 7

5:45 pm - 1:30 pm

SEA

MNL

28h 45m

2 stops

2:40 pm - 2:25 pm

MNL

SEA

14h 45m

1 stop

$663ANA

Sat, Apr 18 - Sun, Jun 7

Hainan Airlines flights from State of Washington to Southeast Asia

Our best Hainan Airlines deals on State of Washington to Southeast Asia flight tickets

Hainan Airlines

Apr 7

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

Apr 20

BKK12:40 amBangkok Suvarnabhumi

22h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$687

Hainan Airlines

Apr 7

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

Apr 20

BKK12:40 amBangkok Suvarnabhumi

22h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$688

Hainan Airlines

Apr 7

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

May 1

BKK12:40 amBangkok Suvarnabhumi

22h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$711

China Airlines flights from State of Washington to Southeast Asia

Our best China Airlines deals on State of Washington to Southeast Asia flight tickets

China Airlines

Mar 15

SEA1:10 amSeattle/Tacoma Intl

23h 45m

1 stop

MNL3:55 pmManila Ninoy Aquino Intl

Apr 27

MNL10:35 amManila Ninoy Aquino Intl

23h 40m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$688

China Airlines

Apr 30

SEA1:15 amSeattle/Tacoma Intl

18h 25m

1 stop

SGN9:40 amHo Chi Minh City

May 5

SGN10:50 amHo Chi Minh City

22h 25m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$702

China Airlines

Apr 12

SEA1:15 amSeattle/Tacoma Intl

18h 30m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Apr 20

BKK5:30 pmBangkok Suvarnabhumi

15h 45m

1 stop

SEA7:15 pmSeattle/Tacoma Intl

$706

momondo 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

SeattleCebu City

SEA - CEB

SEACEB

Seattle/Tacoma Intl

Sun 5/17

10:15 am-2:50 pm

1 stop37h 35m

Cebu City Mactan Intl

Sat 11/14

3:40 pm-7:10 am

1 stop31h 30m

$517

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/23

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Thu 4/30

9:00 am-8:45 am

Nonstop14h 45m

$525

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 4/16

12:55 am-9:30 pm

1 stop29h 35m

Singapore Changi

Sun 4/26

10:50 pm-2:55 pm

1 stop31h 05m

$612

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Thu 8/20

4:30 pm-6:40 am

1 stop23h 10m

Singapore Changi

Wed 8/26

11:05 am-2:25 pm

1 stop18h 20m

$617

SeattleCebu City

SEA - CEB

SEACEB

Seattle/Tacoma Intl

Mon 5/4

12:50 pm-11:30 pm

1 stop19h 40m

Cebu City Mactan Intl

Tue 6/2

1:00 am-11:00 am

1 stop25h 00m

$621

SeattleCebu City

SEA - CEB

SEACEB

Seattle/Tacoma Intl

Mon 5/4

12:50 pm-11:30 pm

1 stop19h 40m

Cebu City Mactan Intl

Tue 6/2

1:00 am-3:05 pm

2 stops29h 05m

$632

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Mon 4/27

11:45 am-10:05 am

1 stop32h 20m

Ho Chi Minh City

Sun 5/24

6:20 pm-10:05 am

1 stop29h 45m

$642

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/26

12:55 am-10:40 am

1 stop19h 45m

Bangkok Suvarnabhumi

Sun 5/10

1:20 am-2:55 pm

1 stop27h 35m

$643

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Mon 4/6

11:45 am-5:20 pm

1 stop39h 35m

Ho Chi Minh City

Thu 5/7

7:10 am-10:05 am

1 stop16h 55m

$645

SeattleManila

SEA - MNL

SEAMNL

Seattle/Tacoma Intl

Sat 4/18

5:45 pm-1:30 pm

2 stops28h 45m

Manila Ninoy Aquino Intl

Sun 6/7

2:40 pm-2:25 pm

1 stop14h 45m

$663

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Southeast Asia?

The month of September is, on average, the cheapest month to fly to Southeast Asia from State of Washington, with most prices found around $748. If you don’t want to visit Southeast Asia in September, then you should wait until February to fly from State of Washington, when ticket prices are also cheap, with an average price of $762.

What is the cheapest Washington to Southeast Asia flight route?

Fly from Seattle/Tacoma Intl to Singapore Changi for the best Washington - Southeast Asia flight prices

How far in advance should I book a flight to Southeast Asia?

You are more likely to see cheaper flights to Southeast Asia from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $874 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from State of Washington for as low as $715 on momondo.

What cabin class options are available on Washington to Southeast Asia flights?

There are 3 cabin classes available to choose from on Washington to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between State of Washington to Southeast Asia.

Cheap State of Washington to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Southeast Asia

Fastest flight time	13h 50m
Direct flights	Mon, Wed, Thu, Fri and Sat
Airports in Southeast Asia	295 airports

The fastest flight from State of Washington to Southeast Asia takes 13h 50m

Direct flights go from State of Washington to Southeast Asia on Monday, Wednesday, Thursday, Friday and Saturday. There are no airlines offering direct flights.

There are 295 airports in Southeast Asia. From State of Washington there are direct flights to Manila Ninoy Aquino Intl (MNL).

Search flight deals

When did momondo last update prices for flights from Washington to Southeast Asia?
Prices for flights from Washington to Southeast Asia are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Southeast Asia?
There are 17 operators available for flights from Washington to Southeast Asia as of February 2026.
How old do you have to be to fly from Washington to Southeast Asia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from State of Washington to Southeast Asia?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Southeast Asia is Boeing 737-800 Passenger/BBJ2 (winglets), representing 16.20% of all bookings. The subsequent popular models are Airbus A321neo at 11.38%, Boeing 787-9 Dreamliner at 9.78%, and Boeing 737-900 at 6.78%.

Best airlines flying from State of Washington to Southeast Asia

Compare and see reviews for airlines that fly from State of Washington to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $154	Free Cancellation	Rating 7.3 962 reviews	Search Philippine Airlines flights
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,195 reviews	Search Korean Air flights
United Airlines	PriceFrom $440	Free Cancellation	Rating 7.4 9,366 reviews	Search United Airlines flights
Singapore Airlines	PriceFrom $500	Free Cancellation	Rating 8.2 1,465 reviews	Search Singapore Airlines flights
Delta	PriceFrom $544	Free Cancellation	Rating 7.9 8,244 reviews	Search Delta flights
Asiana Airlines	PriceFrom $605	Free Cancellation	Rating 8.1 502 reviews	Search Asiana Airlines flights
Cathay Pacific	PriceFrom $617	Free Cancellation	Rating 7.6 1,180 reviews	Search Cathay Pacific flights
Air Canada	PriceFrom $660	Free Cancellation	Rating 7.1 10,760 reviews	Search Air Canada flights
China Airlines	PriceFrom $669	Free Cancellation	Rating 8.3 809 reviews	Search China Airlines flights
ANA	PriceFrom $682	Free Cancellation	Rating 8.4 1,107 reviews	Search ANA flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Southeast Asia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Southeast Asia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington to Southeast Asia with flexible booking policies on momondo?

Yes. All flights to Southeast Asia from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to Southeast Asia?

Once all potential Washington to Southeast Asia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to Southeast Asia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington to Southeast Asia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.