What is the cheapest airline that flies from Thailand to Seattle/Tacoma Intl?

Philippine Airlines, China Airlines, and Korean Air are the most popular carriers operating from Thailand to Seattle/Tacoma Intl

How long does it take to fly to Seattle?

Flight times vary depending on what airport in Thailand you fly out of and what airport in Seattle you fly into. For example, flying from Bangkok to Seattle takes 18h 22m on average. On the other hand, flying from Chiang Mai to Seattle takes 21h 15m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What airlines fly to Seattle?

STARLUX Airlines, EVA Air and Korean Air are the top three most popular airlines that fly to Seattle from Thailand according to our data. STARLUX Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Thailand to Seattle/Tacoma Intl Airport?

Prices for flights from Thailand to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

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

As of February 2026, there are 8 operators available to choose from for flights from Thailand to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Thailand to Seattle/Tacoma Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Thailand to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$452 Cheap Flights from Thailand to Seattle in 2026

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Find the cheapest flights from Thailand to Seattle

Round-trip

One-way

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Recent round-trip flight deals from Thailand to Seattle

Enter your travel dates to find the best prices.

1:05 am - 9:00 am

BKK

SEA

21h 55m

1 stop

11:00 am - 12:20 pm

SEA

BKK

35h 20m

1 stop

$646Hainan Airlines

Mon, Mar 16 - Tue, Apr 7

1:05 am - 9:00 am

BKK

SEA

21h 55m

1 stop

11:00 am - 11:00 pm

SEA

BKK

22h 00m

1 stop

$647Hainan Airlines

Mon, Mar 16 - Tue, Apr 7

12:20 pm - 2:55 pm

BKK

SEA

16h 35m

1 stop

12:55 am - 1:35 pm

SEA

BKK

22h 40m

1 stop

$648Multiple Airlines

Mon, Mar 16 - Sun, Mar 29

2:05 am - 2:55 pm

BKK

SEA

26h 50m

1 stop

12:55 am - 1:35 pm

SEA

BKK

22h 40m

1 stop

$650Multiple Airlines

Fri, Mar 13 - Sun, Mar 29

9:40 pm - 2:55 pm

BKK

SEA

31h 15m

1 stop

12:10 am - 9:30 pm

SEA

BKK

30h 20m

1 stop

$653Multiple Airlines

Mon, Jun 8 - Sun, Nov 8

1:20 am - 2:55 pm

BKK

SEA

27h 35m

1 stop

12:55 am - 11:20 pm

SEA

BKK

32h 25m

1 stop

$658Asiana Airlines

Sun, May 31 - Mon, Aug 31

1:20 am - 2:55 pm

BKK

SEA

27h 35m

1 stop

12:55 am - 10:40 am

SEA

BKK

19h 45m

1 stop

$659Asiana Airlines

Sun, May 31 - Mon, Aug 31

11:40 pm - 8:05 pm

BKK

SEA

34h 25m

1 stop

11:10 pm - 12:10 pm

SEA

BKK

23h 00m

1 stop

$666Philippine Airlines

Wed, Apr 15 - Fri, May 15

11:35 am - 7:30 pm

CNX

SEA

21h 55m

1 stop

12:50 am - 10:25 am

SEA

CNX

19h 35m

1 stop

$777EVA Air

Wed, May 13 - Tue, Jun 30

11:35 am - 7:30 pm

CNX

SEA

21h 55m

1 stop

12:50 am - 10:25 am

SEA

CNX

19h 35m

1 stop

$778EVA Air

Wed, May 13 - Tue, Jun 30

Korean Air flights from Thailand to Seattle

Our best Korean Air deals on Thailand to Seattle flight tickets

Korean Air

Mar 2

CNX12:15 amChiang Mai

23h 45m

1 stop

SEA9:00 amSeattle/Tacoma Intl

Mar 10

SEA12:00 pmSeattle/Tacoma Intl

20h 55m

1 stop

CNX10:55 pmChiang Mai

$902

Korean Air

Mar 1

CNX12:15 amChiang Mai

23h 45m

1 stop

SEA9:00 amSeattle/Tacoma Intl

Mar 8

SEA12:00 pmSeattle/Tacoma Intl

20h 55m

1 stop

CNX10:55 pmChiang Mai

$910

Korean Air

Feb 17

BKK9:40 amBangkok Suvarnabhumi

38h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

Feb 24

SEA11:00 amSeattle/Tacoma Intl

22h 45m

1 stop

BKK12:45 amBangkok Suvarnabhumi

$978

China Airlines flights from Thailand to Seattle

Our best China Airlines deals on Thailand to Seattle flight tickets

China Airlines

Aug 6

CNX11:20 amChiang Mai

22h 25m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

Sep 29

SEA1:15 amSeattle/Tacoma Intl

19h 05m

1 stop

CNX10:20 amChiang Mai

$903

China Airlines

Aug 6

CNX11:20 amChiang Mai

22h 25m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

Sep 29

SEA1:15 amSeattle/Tacoma Intl

19h 05m

1 stop

CNX10:20 amChiang Mai

$908

China Airlines

Mar 4

CNX7:45 pmChiang Mai

37h 25m

2 stops

SEA6:10 pmSeattle/Tacoma Intl

Mar 9

SEA1:10 amSeattle/Tacoma Intl

19h 15m

1 stop

CNX10:25 amChiang Mai

$926

Fly from

Fly to

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/16

1:05 am-9:00 am

1 stop21h 55m

Seattle/Tacoma Intl

Tue 4/7

11:00 am-12:20 pm

1 stop35h 20m

$646

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/16

1:05 am-9:00 am

1 stop21h 55m

Seattle/Tacoma Intl

Tue 4/7

11:00 am-11:00 pm

1 stop22h 00m

$647

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/16

12:20 pm-2:55 pm

1 stop16h 35m

Seattle/Tacoma Intl

Sun 3/29

12:55 am-1:35 pm

1 stop22h 40m

$648

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Fri 3/13

2:05 am-2:55 pm

1 stop26h 50m

Seattle/Tacoma Intl

Sun 3/29

12:55 am-1:35 pm

1 stop22h 40m

$650

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 6/8

9:40 pm-2:55 pm

1 stop31h 15m

Seattle/Tacoma Intl

Sun 11/8

12:10 am-9:30 pm

1 stop30h 20m

$653

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 5/31

1:20 am-2:55 pm

1 stop27h 35m

Seattle/Tacoma Intl

Mon 8/31

12:55 am-11:20 pm

1 stop32h 25m

$658

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 5/31

1:20 am-2:55 pm

1 stop27h 35m

Seattle/Tacoma Intl

Mon 8/31

12:55 am-10:40 am

1 stop19h 45m

$659

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 4/15

11:40 pm-8:05 pm

1 stop34h 25m

Seattle/Tacoma Intl

Fri 5/15

11:10 pm-12:10 pm

1 stop23h 00m

$666

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 5/13

11:35 am-7:30 pm

1 stop21h 55m

Seattle/Tacoma Intl

Tue 6/30

12:50 am-10:25 am

1 stop19h 35m

$777

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 5/13

11:35 am-7:30 pm

1 stop21h 55m

Seattle/Tacoma Intl

Tue 6/30

12:50 am-10:25 am

1 stop19h 35m

$778

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 Thailand to Seattle

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 Seattle?

In general, February is the cheapest month to fly from Thailand to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $748. If you don’t want to visit Seattle in February, then you should wait until December to fly from Thailand, when ticket prices are also cheap, with an average price of $766.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Thailand when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $874 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Thailand for as low as $738 on momondo.

Cheap Thailand to Seattle flight deals and tips

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

Fastest flight time	15h 55m
Direct flights	None

The fastest flight from Thailand to Seattle takes 15h 55m

There are no direct flights from Thailand to Seattle. There are no popular flight routes from Thailand to Seattle.

Search flight deals

When did momondo last update prices for flights from Thailand to Seattle/Tacoma Intl Airport?
Prices for flights from Thailand to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Thailand to Seattle/Tacoma Intl Airport?
As of February 2026, there are 8 operators available to choose from for flights from Thailand to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Thailand to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Thailand to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Thailand to Seattle

Compare and see reviews for airlines that fly from Thailand to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $624	Free Cancellation	Rating 7.3 955 reviews	Search Philippine Airlines flights
Asiana Airlines	PriceFrom $655	Free Cancellation	Rating 8.1 504 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $705	Free Cancellation	Rating 8.9 274 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $766	Free Cancellation	Rating 8.4 1,354 reviews	Search EVA Air flights
ANA	PriceFrom $768	Free Cancellation	Rating 8.4 1,092 reviews	Search ANA flights
China Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 804 reviews	Search China Airlines flights
Korean Air	PriceFrom $803	Free Cancellation	Rating 8.4 1,192 reviews	Search Korean Air flights
Delta	PriceFrom $829	Free Cancellation	Rating 7.9 8,205 reviews	Search Delta flights

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Renton

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Lynnwood

Kent

Marysville

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Federal Way

Kirkland

Westport

Centralia

Fife

Tumwater

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Thailand.

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

Flights from Thailand to Seattle 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 Thailand to Seattle?

momondo helps you find the best flight between Thailand and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Thailand to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.