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Cheap flights from Seattle to Southeast Asia from $266

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Southeast Asia departing on 3/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Southeast Asia

Cheap round-trip flights

Singapore Airlines Logo
8:45 am - 5:10 pmSEA-HKT
41h 25m1 stop
Singapore Airlines Logo
11:05 am - 7:10 amHKT-SEA
35h 05m1 stop
$508Singapore Airlines
Find Deal
Fri, Jan 23 - Fri, Feb 6
Singapore Airlines Logo
8:45 am - 1:30 amSEA-CEB
24h 45m1 stop
Singapore Airlines Logo
1:00 pm - 8:10 amCEB-SEA
34h 10m1 stop
$575Singapore Airlines
Find Deal
Tue, Mar 3 - Mon, Mar 16
Philippine Airlines Logo
9:30 pm - 1:00 pmSEA-SIN
23h 30m1 stop
Philippine Airlines Logo
10:35 am - 6:40 pmSIN-SEA
24h 05m1 stop
$631Philippine Airlines
Find Deal
Sun, Nov 16 - Tue, Nov 25
Philippine Airlines Logo
9:30 pm - 9:35 amSEA-SIN
20h 05m1 stop
Philippine Airlines Logo
8:10 pm - 6:40 pmSIN-SEA
38h 30m1 stop
$647Philippine Airlines
Find Deal
Sun, Nov 16 - Mon, Nov 24
Asiana Airlines Logo
12:10 am - 10:05 pmSEA-BKK
30h 55m1 stop
Asiana Airlines Logo
12:20 pm - 1:55 pmBKK-SEA
16h 35m1 stop
$650Asiana Airlines
Find Deal
Wed, Jan 14 - Mon, Feb 2
Asiana Airlines Logo
12:10 am - 10:00 pmSEA-BKK
30h 50m1 stop
Asiana Airlines Logo
11:55 pm - 1:55 pmBKK-SEA
29h 00m1 stop
$652Asiana Airlines
Find Deal
Sun, Nov 2 - Sun, Nov 9
China Airlines Logo
12:10 am - 10:00 amSEA-SGN
18h 50m1 stop
China Airlines Logo
5:50 pm - 6:10 pmSGN-SEA
15h 20m1 stop
$681China Airlines
Find Deal
Sat, Nov 8 - Sun, Nov 16
China Airlines Logo
12:10 am - 10:00 amSEA-SGN
18h 50m1 stop
China Airlines Logo
11:00 am - 6:10 pmSGN-SEA
22h 10m1 stop
$707China Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 16
EVA Air Logo
1:10 am - 10:35 amSEA-CNX
19h 25m1 stop
EVA Air Logo
1:15 pm - 6:10 pmCNX-SEA
19h 55m1 stop
$837EVA Air
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Tue, Oct 28 - Wed, Nov 5
EVA Air Logo
11:30 pm - 10:35 amSEA-CNX
20h 05m1 stop
EVA Air Logo
11:50 am - 6:30 pmCNX-SEA
20h 40m1 stop
$873EVA Air
Find Deal
Sat, Mar 7 - Tue, Mar 17

Asiana Airlines flights from Seattle to Southeast Asia

Our best Asiana Airlines deals on Seattle to Southeast Asia flight tickets
Asiana Airlines
Jan 14
SEA12:10 amSeattle/Tacoma Intl
30h 55m
1 stop
BKK10:05 pmBangkok Suvarnabhumi
Feb 2
BKK12:20 pmBangkok Suvarnabhumi
16h 35m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$650
Find similar
Asiana Airlines
Nov 2
SEA12:10 amSeattle/Tacoma Intl
30h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Nov 9
BKK11:55 pmBangkok Suvarnabhumi
29h 00m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$652
Find similar
Asiana Airlines
Oct 26
SEA12:10 amSeattle/Tacoma Intl
31h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Nov 9
BKK12:20 pmBangkok Suvarnabhumi
16h 35m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$654
Find similar

Korean Air flights from Seattle to Southeast Asia

Our best Korean Air deals on Seattle to Southeast Asia flight tickets
Korean Air
Oct 27
SEA7:10 amSeattle/Tacoma Intl
26h 10m
2 stops
BKK11:20 pmBangkok Suvarnabhumi
Nov 8
BKK12:55 amBangkok Suvarnabhumi
23h 05m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$664
Find similar
Korean Air
Nov 11
SEA11:00 amSeattle/Tacoma Intl
20h 25m
1 stop
SGN10:25 pmHo Chi Minh City
Dec 9
SGN11:50 pmHo Chi Minh City
24h 10m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$670
Find similar
Korean Air
Dec 29
SEA11:00 amSeattle/Tacoma Intl
22h 45m
1 stop
BKK12:45 amBangkok Suvarnabhumi
Jan 12
BKK2:05 amBangkok Suvarnabhumi
21h 55m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$673
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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, momondo users made 832,500 searches. Data last updated September 30, 2025.
Use the filters below to find and compare flights from Seattle to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Fri 1/23

8:45 am-5:10 pm

1 stop41h 25m

Phuket City

Fri 2/6

11:05 am-7:10 am

1 stop35h 05m

$508

SeattleCebu City

SEA - CEB

SEACEB

Seattle/Tacoma Intl

Tue 3/3

8:45 am-1:30 am

1 stop24h 45m

Cebu City Mactan Intl

Mon 3/16

1:00 pm-8:10 am

1 stop34h 10m

$575

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 11/16

9:30 pm-1:00 pm

1 stop23h 30m

Singapore Changi

Tue 11/25

10:35 am-6:40 pm

1 stop24h 05m

$631

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 11/16

9:30 pm-9:35 am

1 stop20h 05m

Singapore Changi

Mon 11/24

8:10 pm-6:40 pm

1 stop38h 30m

$647

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 1/14

12:10 am-10:05 pm

1 stop30h 55m

Bangkok Suvarnabhumi

Mon 2/2

12:20 pm-1:55 pm

1 stop16h 35m

$650

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 11/2

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Sun 11/9

11:55 pm-1:55 pm

1 stop29h 00m

$652

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Sat 11/8

12:10 am-10:00 am

1 stop18h 50m

Ho Chi Minh City

Sun 11/16

5:50 pm-6:10 pm

1 stop15h 20m

$681

SeattleHo Chi Minh City

SEA - SGN

SEASGN

Seattle/Tacoma Intl

Thu 11/6

12:10 am-10:00 am

1 stop18h 50m

Ho Chi Minh City

Sun 11/16

11:00 am-6:10 pm

1 stop22h 10m

$707

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 10/28

1:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Wed 11/5

1:15 pm-6:10 pm

1 stop19h 55m

$837

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 3/7

11:30 pm-10:35 am

1 stop20h 05m

Chiang Mai

Tue 3/17

11:50 am-6:30 pm

1 stop20h 40m

$873

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Southeast Asia from

How to get the cheapest flight ticket from Seattle 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?

The month of February is, on average, the cheapest month to fly to Southeast Asia from Seattle, with most prices found around $775. If you don’t want to visit Southeast Asia in February, then you should wait until September to fly from Seattle, when ticket prices are also cheap, with an average price of $777.

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

The cheapest day to depart from Seattle 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 Seattle 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 Seattle/Tacoma Intl to Southeast Asia flight route?

Fly from Seattle/Tacoma Intl to Singapore Changi for the best Seattle/Tacoma Intl - 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 Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $910 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Seattle for as low as $770 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Southeast Asia flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl 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 Seattle to Southeast Asia flights?

You could potentially save up to 4% on your flight if you consider stops on a Seattle to Southeast Asia flight.

Cheap Seattle to Southeast Asia flight deals and tips

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

Fastest flight time

13h 30m

Direct flights

Mon, Wed, Thu, Fri and Sat

Airports in Southeast Asia

1 airport
The fastest flight from Seattle to Southeast Asia takes 13h 30m
Direct flights go from Seattle to Southeast Asia on Monday, Wednesday, Thursday, Friday and Saturday. There are no airlines offering direct flights.
There is 1 airport near Southeast Asia: Manila Ninoy Aquino Intl (MNL)
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  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Southeast Asia?

    Prices for flights from Seattle/Tacoma Intl Airport to Southeast Asia refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Southeast Asia?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport to Southeast Asia.

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

    The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Southeast Asia?

Best airlines flying from Seattle to Southeast Asia

Compare and see reviews for airlines that fly from Seattle to Southeast Asia with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $433Free CancellationRating
7.9
7,964 reviews
Search Delta flights
United AirlinesPriceFrom $459Free CancellationRating
7.4
8,931 reviews
Search United Airlines flights
Singapore AirlinesPriceFrom $509Free CancellationRating
8.1
1,373 reviews
Search Singapore Airlines flights
Philippine AirlinesPriceFrom $605Free CancellationRating
7.3
914 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $626Free CancellationRating
8.2
485 reviews
Search Asiana Airlines flights
Air CanadaPriceFrom $661Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Korean AirPriceFrom $673Free CancellationRating
8.4
1,143 reviews
Search Korean Air flights
Japan AirlinesPriceFrom $687Free CancellationRating
8.3
1,570 reviews
Search Japan Airlines flights
ANAPriceFrom $688Free CancellationRating
8.4
974 reviews
Search ANA flights
China AirlinesPriceFrom $693Free CancellationRating
8.3
767 reviews
Search China Airlines flights

Why use momondo?

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

Finding the right flight to Southeast Asia from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Southeast Asia quick and easy, saving you time and money.

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

Flights from Seattle to Southeast Asia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Southeast Asia from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Seattle 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

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.
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