Southeast Asia

$344+ Cheap flights from Seattle (SEA) 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BKK
Jul 28 — Aug 41
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Cheap flight deals from Seattle to Southeast Asia

Keep the following information in mind while searching for Seattle to Southeast Asia flight deals. Data was last updated July 23, 2025.

Round-trip from

$594
(FlightHub)

One-way from

$344
(CrystalTravel)

Popular in

December

Cheapest in

April

Average price

$1,084
From Seattle/Tacoma Intl to Southeast Asia
One-way flight from Seattle/Tacoma Intl to Southeast Asia
Highest demand for flights based on searches. 10% potential increase in price ($110 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Seattle to Southeast Asia

Cheapest flights from Seattle to Southeast Asia
Explore the most affordable flight options available from Seattle to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

This FlightHub deal was found by Cheapflights users on 7/22. 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 10/2110:15 amSEA - DPS
1 stop41h 35mSingapore Airlines
Thu 10/3010:25 amDPS - SEA
1 stop36h 45mSingapore Airlines
Deal found 7/22$594
This FlightHub deal was found by Cheapflights users on 7/21. 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.
Sun 11/28:45 amSEA - KUL
1 stop20h 15mSingapore Airlines
Wed 11/128:55 amKUL - SEA
1 stop38h 15mSingapore Airlines
Deal found 7/21$646
This CrystalTravel deal was found by Cheapflights users on 7/23. 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.
Tue 11/411:00 amSEA - BKK
1 stop19h 30mKorean Air
Wed 2/259:30 pmBKK - SEA
1 stop26h 30mKorean Air
Deal found 7/23$661
This oojo deal was found by Cheapflights users on 7/23. 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 9/2811:35 pmSEA - KUL
1 stop24h 50mPhilippine Airlines
Sat 10/42:15 amKUL - SEA
1 stop32h 00mPhilippine Airlines
Deal found 7/23$674
This FlightHub deal was found by Cheapflights users on 7/22. 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 9/2810:15 amSEA - SIN
Nonstop16h 20mSingapore Airlines
Tue 10/79:15 amSIN - SEA
1 stop22h 43mSingapore Airlines
Deal found 7/22$682
This FlightHub deal was found by Cheapflights users on 7/22. 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 9/2810:15 amSEA - CEB
1 stop37h 30mSingapore Airlines
Wed 10/81:05 pmCEB - SEA
1 stop34h 40mSingapore Airlines
Deal found 7/22$692
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/711:35 pmSEA - SIN
1 stop22h 45mPhilippine Airlines
Sun 9/212:35 pmSIN - SEA
1 stop19h 40mPhilippine Airlines
Deal found 7/22$694
This Ovago deal was found by Cheapflights users on 7/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/14:30 pmSEA - BKK
1 stop22h 05mANA
Wed 9/179:35 amBKK - SEA
2 stops23h 01mANA
Deal found 7/22$694
This Delta deal was found by Cheapflights users on 7/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2512:55 pmSEA - BKK
1 stop18h 50mDelta
Mon 9/82:35 amBKK - SEA
1 stop25h 05mDelta
Deal found 7/23$695
This lol.travel deal was found by Cheapflights users on 7/22. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/181:20 pmSEA - DPS
1 stop19h 15mKorean Air
Mon 9/111:45 pmDPS - SEA
1 stop25h 55mKorean Air
Deal found 7/22$698
This oojo deal was found by Cheapflights users on 7/22. 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 9/71:40 amSEA - SGN
1 stop24h 40mChina Airlines
Sun 9/2810:50 amSGN - SEA
1 stop22h 30mChina Airlines
Deal found 7/22$699
This United Airlines deal was found by Cheapflights users on 7/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/224:30 pmSEA - BKK
1 stop22h 05mUnited Airlines
Tue 10/79:35 amBKK - SEA
1 stop18h 50mUnited Airlines
Deal found 7/21$700

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2025.
Use the filters below to find and compare flights from Seattle to Southeast Asia that are best for you.

Fly from

Seattle

Fly to

Southeast Asia

Route

Depart

Return

Price

SeattleDenpasar

SEA - DPS

SEADPS

Seattle/Tacoma Intl

Tue 10/21

10:15 am-6:50 pm

1 stop41h 35m

Denpasar Bali Ngurah Rai

Thu 10/30

10:25 am-8:10 am

1 stop36h 45m

$594

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

Sun 11/2

8:45 am-9:00 pm

1 stop20h 15m

Kuala Lumpur Intl

Wed 11/12

8:55 am-7:10 am

1 stop38h 15m

$646

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 11/4

11:00 am-9:30 pm

1 stop19h 30m

Bangkok Suvarnabhumi

Wed 2/25

9:30 pm-9:00 am

1 stop26h 30m

$661

SeattleKuala Lumpur

SEA - KUL

SEAKUL

Seattle/Tacoma Intl

Sun 9/28

11:35 pm-3:25 pm

1 stop24h 50m

Kuala Lumpur Intl

Sat 10/4

2:15 am-7:15 pm

1 stop32h 00m

$674

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 9/28

10:15 am-5:35 pm

Nonstop16h 20m

Singapore Changi

Tue 10/7

9:15 am-4:58 pm

1 stop22h 43m

$682

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 1/14

12:10 am-10:05 pm

1 stop30h 55m

Bangkok Suvarnabhumi

Tue 1/27

11:55 pm-1:55 pm

1 stop29h 00m

$685

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/1

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 9/17

9:35 am-6:36 pm

2 stops23h 01m

$694

SeattleSingapore

SEA - SIN

SEASIN

Seattle/Tacoma Intl

Sun 9/7

11:35 pm-1:20 pm

1 stop22h 45m

Singapore Changi

Sun 9/21

2:35 pm-7:15 pm

1 stop19h 40m

$694

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 8/25

12:55 pm-9:45 pm

1 stop18h 50m

Bangkok Suvarnabhumi

Mon 9/8

2:35 am-1:40 pm

1 stop25h 05m

$695

SeattleDenpasar

SEA - DPS

SEADPS

Seattle/Tacoma Intl

Mon 8/18

1:20 pm-11:35 pm

1 stop19h 15m

Denpasar Bali Ngurah Rai

Mon 9/1

11:45 pm-10:40 am

1 stop25h 55m

$698

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Seattle 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 Seattle to Southeast Asia

What is the cheapest month to book a flight from Seattle to Southeast Asia?

Currently, March is the cheapest month in which you can book a flight from Seattle to Southeast Asia (average of $950). Flying from Seattle to Southeast Asia in December is currently the most expensive (average of $1,568). 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 SEA to YJX?

Find hourly flight availability from Seattle 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 July 23, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Southeast Asia as you normally would.

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 July 23, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air, and Korean Air from Seattle to Southeast Asia by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

9.0

Boarding

9.0

Crew

9.3

Entertainment

9.0

Overall

9.0

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Boarding

9.0

Crew

9.3

Entertainment

9.0

Overall

9.0

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Boarding

9.0

Crew

9.3

Entertainment

9.0

Overall

9.0

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Boarding

9.0

Crew

9.3

Entertainment

9.0

Overall

9.0

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
8.4
Very good

Comfort

9.0

Boarding

9.0

Crew

9.3

Entertainment

9.0

Overall

9.0

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Comfort

9.0

Boarding

9.0

Crew

9.3

Entertainment

9.0

Overall

9.0

Food

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Related info for your journey

Find useful and relevant information for your journey from Seattle 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 airport do you fly from for flights from Seattle to Southeast Asia?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Southeast Asia.

  • What are the cheapest airlines to fly from Seattle to Southeast Asia one-way?

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $344. However, be on the lookout for offers from Singapore Airlines and Asiana Airlines, as they are both options that can get you from Seattle to Southeast Asia for a low price.

  • What are the most popular routes from Seattle to Southeast Asia?

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

    Yes. In addition to deals on Seattle to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Southeast Asia.

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Southeast Asia?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Southeast Asia (average of $950). Flying from Seattle to Southeast Asia in December is currently the most expensive (average of $1,568). 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

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Alternative routes for Seattle to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Seattle to Southeast Asia

Discover the top 10 airlines that operate flights from Seattle 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 July 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$433Average$1,009FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$565Average$974FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$635Average$825FlexibilityNo cancel feeOn-time76%
Philippine AirlinesCheapest$682Average$912FlexibilityNo cancel feeOn-time60%
Japan AirlinesCheapest$687Average$925FlexibilityNo cancel feeOn-time79%
ANACheapest$688Average$937FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$691Average$957FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$691Average$911FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$704Average$903FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$712Average$1,123FlexibilityNo cancel feeOn-time67%

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