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

Hainan Airlines, Philippine Airlines, and STARLUX Airlines are the most popular carriers operating from Thailand to Seattle/Tacoma Intl

What airlines fly to Seattle?

EVA Air, STARLUX Airlines and Korean Air are the top three most popular airlines that fly to Seattle from Thailand according to our data. EVA Air is the first choice among our users, with 31% 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.

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 Chiang Mai to Seattle takes 15h 25m on average. On the other hand, flying from Bangkok to Seattle takes 17h 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.

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 January 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.

$428 Cheap Flights from Thailand to Seattle in 2026

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Find the cheapest flights from Thailand to Seattle

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Recent round-trip flight deals from Thailand to Seattle

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2:05 am - 1:55 pm

BKK

SEA

26h 50m1 stop

12:10 am - 11:20 pm

SEA

BKK

32h 10m1 stop

$636Multiple Airlines

Sun, Feb 15 - Sun, Feb 22

1:05 am - 8:00 am

BKK

SEA

21h 55m1 stop

11:00 am - 11:25 pm

SEA

BKK

22h 25m1 stop

$639Hainan Airlines

Mon, Mar 2 - Tue, Mar 24

1:05 am - 8:00 am

BKK

SEA

21h 55m1 stop

11:00 am - 11:25 pm

SEA

BKK

22h 25m1 stop

$640Hainan Airlines

Mon, Mar 2 - Tue, Mar 24

1:20 pm - 6:40 pm

BKK

SEA

20h 20m1 stop

9:30 pm - 12:00 pm

SEA

BKK

23h 30m1 stop

$682Philippine Airlines

Tue, Jan 20 - Tue, Jan 27

1:25 pm - 8:05 pm

BKK

SEA

20h 40m1 stop

11:10 pm - 6:30 pm

SEA

BKK

29h 20m1 stop

$683Philippine Airlines

Tue, Mar 31 - Fri, Jun 5

5:20 pm - 4:10 pm

CNX

SEA

36h 50m1 stop

1:15 am - 4:20 pm

SEA

CNX

25h 05m1 stop

$753STARLUX Airlines

Tue, May 5 - Tue, Sep 8

11:35 am - 7:30 pm

CNX

SEA

21h 55m1 stop

12:30 am - 10:25 am

SEA

CNX

19h 55m1 stop

$777EVA Air

Wed, May 6 - Tue, Sep 8

5:20 pm - 4:10 pm

CNX

SEA

36h 50m1 stop

1:15 am - 4:20 pm

SEA

CNX

25h 05m1 stop

$787STARLUX Airlines

Sat, May 9 - Tue, Sep 8

11:35 am - 7:30 pm

CNX

SEA

21h 55m1 stop

1:30 am - 10:25 am

SEA

CNX

18h 55m1 stop

$792EVA Air

Tue, May 5 - Mon, Sep 7

11:20 am - 7:15 pm

CNX

SEA

21h 55m1 stop

1:55 am - 10:20 am

SEA

CNX

18h 25m1 stop

$825China Airlines

Mon, May 4 - Thu, Sep 10

Hainan Airlines flights from Thailand to Seattle

Our best Hainan Airlines deals on Thailand to Seattle flight tickets

Hainan Airlines

Mar 2

BKK1:05 amBangkok Suvarnabhumi

21h 55m

1 stop

SEA8:00 amSeattle/Tacoma Intl

Mar 24

SEA11:00 amSeattle/Tacoma Intl

22h 25m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

$639

Find similar

Hainan Airlines

Mar 2

BKK1:05 amBangkok Suvarnabhumi

21h 55m

1 stop

SEA8:00 amSeattle/Tacoma Intl

Mar 24

SEA11:00 amSeattle/Tacoma Intl

22h 25m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

$640

Find similar

Hainan Airlines

Mar 30

BKK12:40 amBangkok Suvarnabhumi

22h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

Sep 10

SEA11:05 amSeattle/Tacoma Intl

33h 30m

1 stop

BKK10:35 amBangkok Suvarnabhumi

$668

Find similar

Philippine Airlines flights from Thailand to Seattle

Our best Philippine Airlines deals on Thailand to Seattle flight tickets

Philippine Airlines

Mar 31

BKK1:25 pmBangkok Suvarnabhumi

20h 40m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

Jun 5

SEA11:10 pmSeattle/Tacoma Intl

29h 20m

1 stop

BKK6:30 pmBangkok Suvarnabhumi

$683

Find similar

Philippine Airlines

Feb 9

BKK6:45 pmBangkok Suvarnabhumi

38h 55m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

Feb 24

SEA9:30 pmSeattle/Tacoma Intl

34h 30m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

$684

Find similar

Philippine Airlines

Jan 27

BKK1:20 pmBangkok Suvarnabhumi

20h 20m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

Apr 15

SEA11:10 pmSeattle/Tacoma Intl

23h 00m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

$694

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 2/15

2:05 am-1:55 pm

1 stop26h 50m

Seattle/Tacoma Intl

Sun 2/22

12:10 am-11:20 pm

1 stop32h 10m

$636

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/2

1:05 am-8:00 am

1 stop21h 55m

Seattle/Tacoma Intl

Tue 3/24

11:00 am-11:25 pm

1 stop22h 25m

$639

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/2

1:05 am-8:00 am

1 stop21h 55m

Seattle/Tacoma Intl

Tue 3/24

11:00 am-11:25 pm

1 stop22h 25m

$640

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 1/20

1:20 pm-6:40 pm

1 stop20h 20m

Seattle/Tacoma Intl

Tue 1/27

9:30 pm-12:00 pm

1 stop23h 30m

$682

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 3/31

1:25 pm-8:05 pm

1 stop20h 40m

Seattle/Tacoma Intl

Fri 6/5

11:10 pm-6:30 pm

1 stop29h 20m

$683

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 5/5

5:20 pm-4:10 pm

1 stop36h 50m

Seattle/Tacoma Intl

Tue 9/8

1:15 am-4:20 pm

1 stop25h 05m

$753

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 5/6

11:35 am-7:30 pm

1 stop21h 55m

Seattle/Tacoma Intl

Tue 9/8

12:30 am-10:25 am

1 stop19h 55m

$777

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 5/9

5:20 pm-4:10 pm

1 stop36h 50m

Seattle/Tacoma Intl

Tue 9/8

1:15 am-4:20 pm

1 stop25h 05m

$787

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 5/5

11:35 am-7:30 pm

1 stop21h 55m

Seattle/Tacoma Intl

Mon 9/7

1:30 am-10:25 am

1 stop18h 55m

$792

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Mon 5/4

11:20 am-7:15 pm

1 stop21h 55m

Seattle/Tacoma Intl

Thu 9/10

1:55 am-10:20 am

1 stop18h 25m

$825

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, December 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 $766. If you don’t want to visit Seattle in December, then you should wait until February to fly from Thailand, when ticket prices are also cheap, with an average price of $806.

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 $894 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 $779 on momondo.

Can stopping save me money on Thailand to Seattle flights?

You could potentially save up to 12% on your flight if you consider stops on a Thailand to Seattle flight.

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 15m
Direct flights	None

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

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 January 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 7.3 948 reviews	Search Philippine Airlines flights
Asiana Airlines	PriceFrom $653	Free Cancellation	Rating 8.2 502 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $705	Free Cancellation	Rating 8.9 254 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $766	Free Cancellation	Rating 8.4 1,311 reviews	Search EVA Air flights
ANA	PriceFrom $781	Free Cancellation	Rating 8.4 1,057 reviews	Search ANA flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.3 798 reviews	Search China Airlines flights
Korean Air	PriceFrom $803	Free Cancellation	Rating 8.4 1,187 reviews	Search Korean Air flights
Delta	PriceFrom $829	Free Cancellation	Rating 7.9 8,016 reviews	Search Delta flights

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Renton

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Lynnwood

Kent

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Lakewood

Fife

Westport

Kirkland

Centralia

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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.