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

Singapore Airlines, Asiana Airlines, and Korean Air are the most popular carriers operating from Washington to Southeast Asia

What airlines fly to Southeast Asia?

Asiana Airlines, EVA Air and China 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 36% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 18 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

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 Pasco, and flying into Southeast Asia, then you can expect flight times to average 11h 20m and 17h 50m, respectively.

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 20 operators available for flights from Washington to Southeast Asia as of July 2025.

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 2025

Q: 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 6 per week as of July 2025. The most frequent departure day is Tue, with 17% of weekly flights leaving on this day.

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Find the cheapest flights from Washington to Southeast Asia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:45 am - 3:00 pmSEA-SGN

39h 15m1 stop

7:50 pm - 7:10 amSGN-SEA

26h 20m1 stop

$508Singapore Airlines

Find Deal

sáb., ene. 24 - sáb., feb. 7

8:45 am - 11:00 amSEA-SGN

35h 15m1 stop

4:15 pm - 7:10 amSGN-SEA

29h 55m1 stop

$511Singapore Airlines

Find Deal

sáb., ene. 24 - sáb., feb. 7

2:15 pm - 10:45 pmSEA-SGN

18h 30m1 stop

12:10 pm - 1:55 pmSGN-SEA

16h 45m1 stop

$638Asiana Airlines

Find Deal

jue., sep. 25 - mar., nov. 25

2:30 pm - 11:05 amSEA-SGN

30h 35m1 stop

12:05 am - 12:30 pmSGN-SEA

26h 25m1 stop

$640Asiana Airlines

Find Deal

mar., ago. 26 - lun., sep. 1

12:50 pm - 11:25 pmSEA-BKK

20h 35m1 stop

2:35 am - 10:40 amBKK-SEA

22h 05m1 stop

$656Korean Air

Find Deal

lun., sep. 1 - mar., sep. 16

12:50 pm - 10:05 pmSEA-SGN

19h 15m1 stop

11:40 pm - 9:00 amSGN-SEA

24h 20m1 stop

$662Korean Air

Find Deal

mié., oct. 22 - lun., dic. 15

9:30 pm - 2:40 pmSEA-SGN

26h 10m1 stop

9:40 am - 6:35 pmSGN-SEA

23h 55m1 stop

$666Philippine Airlines

Find Deal

mié., ene. 7 - jue., ene. 22

11:35 pm - 8:35 amSEA-SGN

19h 00m1 stop

3:35 pm - 7:15 pmSGN-SEA

17h 40m1 stop

$674Philippine Airlines

Find Deal

dom., sep. 21 - dom., oct. 12

4:30 pm - 9:55 pmSEA-SGN

39h 25m1 stop

11:15 pm - 6:36 pmSGN-SEA

33h 21m2 stops

$692ANA

Find Deal

jue., sep. 18 - mié., oct. 8

4:30 pm - 6:00 amSEA-KUL

22h 30m1 stop

7:15 am - 6:36 pmKUL-SEA

26h 21m2 stops

$729ANA

Find Deal

mié., ago. 27 - lun., sep. 15

STARLUX Airlines flights from State of Washington to Southeast Asia

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

STARLUX Airlines

Aug 10

SEA1:15 amSeattle/Tacoma Intl

19h 00m

1 stop

SGN10:15 amHo Chi Minh City

Sep 4

SGN11:30 amHo Chi Minh City

18h 40m

1 stop

SEA4:10 pmSeattle/Tacoma Intl

$757

Find similar

STARLUX Airlines

Aug 13

SEA1:15 amSeattle/Tacoma Intl

26h 00m

1 stop

SGN5:15 pmHo Chi Minh City

Sep 4

SGN6:25 pmHo Chi Minh City

35h 45m

1 stop

SEA4:10 pmSeattle/Tacoma Intl

$779

Find similar

STARLUX Airlines

Jan 9

PDX4:00 pmPortland

29h 35m

2 stops

BKK12:35 pmBangkok Suvarnabhumi

Jan 23

BKK1:45 pmBangkok Suvarnabhumi

23h 41m

2 stops

PDX10:26 pmPortland

$783

Find similar

Korean Air flights from State of Washington to Southeast Asia

Our best Korean Air deals on State of Washington to Southeast Asia flight tickets

Korean Air

Sep 1

SEA12:50 pmSeattle/Tacoma Intl

20h 35m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

Sep 16

BKK2:35 amBangkok Suvarnabhumi

22h 05m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$656

Find similar

Korean Air

Oct 22

SEA12:50 pmSeattle/Tacoma Intl

19h 15m

1 stop

SGN10:05 pmHo Chi Minh City

Dec 15

SGN11:40 pmHo Chi Minh City

24h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$662

Find similar

Korean Air

Aug 13

SEA1:20 pmSeattle/Tacoma Intl

18h 25m

1 stop

BKK9:45 pmBangkok Suvarnabhumi

Sep 1

BKK9:40 pmBangkok Suvarnabhumi

27h 00m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$665

Find similar

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

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

sáb. 1/24

8:45 am-3:00 pm

1 stop39h 15m

Ho Chi Minh City

sáb. 2/7

7:50 pm-7:10 am

1 stop26h 20m

$508

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

sáb. 1/24

8:45 am-11:00 am

1 stop35h 15m

Ho Chi Minh City

sáb. 2/7

4:15 pm-7:10 am

1 stop29h 55m

$511

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

jue. 9/25

2:15 pm-10:45 pm

1 stop18h 30m

Ho Chi Minh City

mar. 11/25

12:10 pm-1:55 pm

1 stop16h 45m

$638

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

mar. 8/26

2:30 pm-11:05 am

1 stop30h 35m

Ho Chi Minh City

lun. 9/1

12:05 am-12:30 pm

1 stop26h 25m

$640

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 9/1

12:50 pm-11:25 pm

1 stop20h 35m

Bangkok Suvarnabhumi

mar. 9/16

2:35 am-10:40 am

1 stop22h 05m

$656

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

mié. 10/22

12:50 pm-10:05 pm

1 stop19h 15m

Ho Chi Minh City

lun. 12/15

11:40 pm-9:00 am

1 stop24h 20m

$662

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

mié. 1/7

9:30 pm-2:40 pm

1 stop26h 10m

Ho Chi Minh City

jue. 1/22

9:40 am-6:35 pm

1 stop23h 55m

$666

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

dom. 9/21

11:35 pm-8:35 am

1 stop19h 00m

Ho Chi Minh City

dom. 10/12

3:35 pm-7:15 pm

1 stop17h 40m

$674

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

jue. 9/18

4:30 pm-9:55 pm

1 stop39h 25m

Ho Chi Minh City

mié. 10/8

11:15 pm-6:36 pm

2 stops33h 21m

$692

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

mié. 8/27

4:30 pm-6:00 am

1 stop22h 30m

Kuala Lumpur Intl

lun. 9/15

7:15 am-6:36 pm

2 stops26h 21m

$729

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 February is, on average, the cheapest month to fly to Southeast Asia from State of Washington, with most prices found around $797. If you don’t want to visit Southeast Asia in February, then you should wait until March to fly from State of Washington, when ticket prices are also cheap, with an average price of $822.

What is the cheapest day to depart on your flight to Southeast Asia?

The cheapest day to depart from State of Washington to Southeast Asia is on a Tuesday when prices can be found for as low as $931. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,111. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

What is the cheapest time of day to depart on your flight to Southeast Asia?

In the morning is the cheapest time of day to fly from State of Washington to Southeast Asia when you can find flight prices for as low as $986. Flying to Southeast Asia in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $1,081. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $935 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 $798 on momondo.

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

There are 4 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

Best Price Found	$281
Fastest flight time	16h 20m
Direct flights	Mon, Wed, Thu and Sat
Airports in Southeast Asia	6 airports

The best one-way flight to Southeast Asia from State of Washington in the past 72 hours is $281. The best round-trip flight deal from State of Washington to Southeast Asia found on momondo in the last 72 hours is $508.

The fastest flight from State of Washington to Southeast Asia takes 16h 20m

Direct flights go from State of Washington to Southeast Asia on Monday, Wednesday, Thursday and Saturday. The only airline offering direct flights is Philippine Airlines.

There are 6 airports near Southeast Asia: Cebu City Mactan Intl (CEB), Bangkok Suvarnabhumi (BKK), Kuala Lumpur Intl (KUL), Singapore Changi (SIN), Manila Ninoy Aquino Intl (MNL), Ho Chi Minh City (SGN)

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 20 operators available for flights from Washington to Southeast Asia as of July 2025.
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 737-900 Passenger/BBJ3 (winglets), representing 13.92% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 13.91%, Boeing 737 MAX 9 at 13.24%, and Airbus A321neo at 9.08%.

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
Delta	PriceFrom $433	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Singapore Airlines	PriceFrom $555	Free Cancellation	Rating 8.1 1,338 reviews	Search Singapore Airlines flights
Asiana Airlines	PriceFrom $634	Free Cancellation	Rating 8.2 468 reviews	Search Asiana Airlines flights
Philippine Airlines	PriceFrom $682	Free Cancellation	Rating 7.2 894 reviews	Search Philippine Airlines flights
Japan Airlines	PriceFrom $687	Free Cancellation	Rating 8.3 1,536 reviews	Search Japan Airlines flights
ANA	PriceFrom $688	Free Cancellation	Rating 8.4 922 reviews	Search ANA flights
Korean Air	PriceFrom $691	Free Cancellation	Rating 8.4 1,121 reviews	Search Korean Air flights
United Airlines	PriceFrom $691	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
China Airlines	PriceFrom $703	Free Cancellation	Rating 8.3 754 reviews	Search China Airlines flights
Air Canada	PriceFrom $712	Free Cancellation	Rating 7.1 9,851 reviews	Search Air Canada 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.

An easier way to manage your Southeast Asia trip

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Popular cities in Southeast Asia

Flights to New Yorkfrom $39

Flights to Londonfrom $283

Flights to Bangkokfrom $515

Flights to Tokyofrom $493

Flights to Los Angelesfrom $37

Flights to Parisfrom $255

Flights to Copenhagenfrom $268

Flights to Istanbulfrom $435

Flights to Manilafrom $523

Flights to Miamifrom $58

Flights to Romefrom $178

Flights to Chicagofrom $59

Cheap flights from Washington to Southeast Asia from $281

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Southeast Asia departing on 11/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Washington to Southeast Asia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

STARLUX Airlines flights from State of Washington to Southeast Asia

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

Korean Air flights from State of Washington to Southeast Asia

Our best Korean Air deals on State of Washington to Southeast Asia flight tickets

momondo Fare Finder

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

See travel insights to Southeast Asia from

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

What is the cheapest month to fly to Southeast Asia?

What is the cheapest day to depart on your flight to Southeast Asia?

What is the cheapest time of day to depart on your flight to Southeast Asia?

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?

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

There are 4 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.

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

Singapore Airlines, Asiana Airlines, and Korean Air are the most popular carriers operating from Washington to Southeast Asia

What airlines fly to Southeast Asia?

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 6 per week as of July 2025. The most frequent departure day is Tue, with 17% 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 Pasco, and flying into Southeast Asia, then you can expect flight times to average 11h 20m and 17h 50m, respectively.

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

Best Price Found

Fastest flight time

Direct flights

Airports in Southeast Asia

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

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

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

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

What is the most popular plane model from State of Washington to Southeast Asia?

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

Why use momondo?

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

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

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

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

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Southeast Asia

Popular cities in Southeast Asia

Popular flights according to clicks in the last 7 days on momondo