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

Korean Air, Qatar Airways, and Delta are the most popular carriers operating from Thailand to Seattle/Tacoma Intl

What airlines fly to Seattle?

STARLUX Airlines, EVA Air and China Airlines 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 33% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 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 Bangkok to Seattle takes 20h 07m on average. On the other hand, flying from Chiang Mai to Seattle takes 22h 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 March 2026, there are 7 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.

$478 Cheap Flights from Thailand to Seattle in 2026

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Recent round-trip flight deals from Thailand to Seattle

Enter your travel dates to find the best prices.

9:35 am - 2:30 pm

BKK

SEA

42h 55m

2 stops

6:57 am - 11:25 am

SEA

BKK

37h 28m

2 stops

$686United Airlines

Wed, May 20 - Fri, Nov 6

1:20 am - 2:55 pm

BKK

SEA

27h 35m

1 stop

12:55 am - 11:20 pm

SEA

BKK

32h 25m

1 stop

$687Asiana Airlines

Sun, May 10 - Sun, May 17

7:00 am - 4:15 pm

BKK

SEA

23h 15m

2 stops

4:30 pm - 4:35 am

SEA

BKK

22h 05m

1 stop

$688United Airlines

Sat, Sep 12 - Tue, Sep 22

9:35 am - 2:25 pm

BKK

SEA

18h 50m

1 stop

4:30 pm - 5:55 am

SEA

BKK

23h 25m

1 stop

$689ANA

Tue, Sep 15 - Sun, Sep 20

7:00 am - 6:30 pm

BKK

SEA

25h 30m

2 stops

10:35 am - 6:30 am

SEA

BKK

28h 55m

2 stops

$690ANA

Mon, Jun 15 - Sun, Jan 10

9:35 am - 11:24 pm

BKK

SEA

27h 49m

2 stops

7:06 am - 9:35 am

SEA

BKK

36h 29m

2 stops

$693United Airlines

Wed, Sep 16 - Sun, Sep 20

11:55 am - 7:50 pm

CNX

SEA

21h 55m

2 stops

1:30 am - 10:25 am

SEA

CNX

18h 55m

1 stop

$839EVA Air

Wed, Aug 19 - Wed, Sep 23

10:10 am - 7:50 pm

CNX

SEA

23h 40m

2 stops

1:30 am - 10:25 am

SEA

CNX

18h 55m

1 stop

$857EVA Air

Wed, Aug 19 - Tue, Sep 22

1:45 pm - 12:45 pm

DMK

SEA

37h 00m

2 stops

4:30 pm - 12:40 pm

SEA

DMK

30h 10m

2 stops

$1,160Multiple Airlines

Mon, Apr 20 - Tue, May 5

6:40 am - 2:55 pm

DMK

SEA

22h 15m

2 stops

12:55 am - 5:10 pm

SEA

DMK

26h 15m

1 stop

$1,206Multiple Airlines

Mon, Jun 15 - Mon, Aug 3

United Airlines flights from Thailand to Seattle

Our best United Airlines deals on Thailand to Seattle flight tickets

United Airlines

May 20

BKK9:35 amBangkok Suvarnabhumi

42h 55m

2 stops

SEA2:30 pmSeattle/Tacoma Intl

Nov 6

SEA6:57 amSeattle/Tacoma Intl

37h 28m

2 stops

BKK11:25 amBangkok Suvarnabhumi

$686

United Airlines

Sep 12

BKK7:00 amBangkok Suvarnabhumi

23h 15m

2 stops

SEA4:15 pmSeattle/Tacoma Intl

Sep 22

SEA4:30 pmSeattle/Tacoma Intl

22h 05m

1 stop

BKK4:35 amBangkok Suvarnabhumi

$688

United Airlines

Sep 16

BKK9:35 amBangkok Suvarnabhumi

27h 49m

2 stops

SEA11:24 pmSeattle/Tacoma Intl

Sep 20

SEA7:06 amSeattle/Tacoma Intl

36h 29m

2 stops

BKK9:35 amBangkok Suvarnabhumi

$693

ANA flights from Thailand to Seattle

Our best ANA deals on Thailand to Seattle flight tickets

ANA

Sep 15

BKK9:35 amBangkok Suvarnabhumi

18h 50m

1 stop

SEA2:25 pmSeattle/Tacoma Intl

Sep 20

SEA4:30 pmSeattle/Tacoma Intl

23h 25m

1 stop

BKK5:55 amBangkok Suvarnabhumi

$689

ANA

Jun 15

BKK7:00 amBangkok Suvarnabhumi

25h 30m

2 stops

SEA6:30 pmSeattle/Tacoma Intl

Jan 10

SEA10:35 amSeattle/Tacoma Intl

28h 55m

2 stops

BKK6:30 amBangkok Suvarnabhumi

$690

ANA

Sep 14

BKK9:35 amBangkok Suvarnabhumi

18h 50m

1 stop

SEA2:25 pmSeattle/Tacoma Intl

Sep 22

SEA3:33 pmSeattle/Tacoma Intl

28h 02m

2 stops

BKK9:35 amBangkok Suvarnabhumi

$827

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 5/20

9:35 am-2:30 pm

2 stops42h 55m

Seattle/Tacoma Intl

Fri 11/6

6:57 am-11:25 am

2 stops37h 28m

$686

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 5/10

1:20 am-2:55 pm

1 stop27h 35m

Seattle/Tacoma Intl

Sun 5/17

12:55 am-11:20 pm

1 stop32h 25m

$687

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sat 9/12

7:00 am-4:15 pm

2 stops23h 15m

Seattle/Tacoma Intl

Tue 9/22

4:30 pm-4:35 am

1 stop22h 05m

$688

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 9/15

9:35 am-2:25 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sun 9/20

4:30 pm-5:55 am

1 stop23h 25m

$689

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 6/15

7:00 am-6:30 pm

2 stops25h 30m

Seattle/Tacoma Intl

Sun 1/10

10:35 am-6:30 am

2 stops28h 55m

$690

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 9/16

9:35 am-11:24 pm

2 stops27h 49m

Seattle/Tacoma Intl

Sun 9/20

7:06 am-9:35 am

2 stops36h 29m

$693

Quickest round-trip

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 8/19

11:55 am-7:50 pm

2 stops21h 55m

Seattle/Tacoma Intl

Wed 9/23

1:30 am-10:25 am

1 stop18h 55m

$839

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 8/19

10:10 am-7:50 pm

2 stops23h 40m

Seattle/Tacoma Intl

Tue 9/22

1:30 am-10:25 am

1 stop18h 55m

$857

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Mon 4/20

1:45 pm-12:45 pm

2 stops37h 00m

Seattle/Tacoma Intl

Tue 5/5

4:30 pm-12:40 pm

2 stops30h 10m

$1,160

BangkokSeattle

DMK - SEA

DMKSEA

Bangkok Don Mueang Intl

Mon 6/15

6:40 am-2:55 pm

2 stops22h 15m

Seattle/Tacoma Intl

Mon 8/3

12:55 am-5:10 pm

1 stop26h 15m

$1,206

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, March 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 $742. If you don’t want to visit Seattle in March, 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 $867 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 $764 on momondo.

Can stopping save me money on Thailand to Seattle flights?

You could potentially save up to 3% 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	18h 50m
Direct flights	None

The fastest flight from Thailand to Seattle takes 18h 50m

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 March 2026, there are 7 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 $625	Free Cancellation	Rating 7.3 978 reviews	Search Philippine Airlines flights
Asiana Airlines	PriceFrom $655	Free Cancellation	Rating 8.1 507 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $705	Free Cancellation	Rating 9.0 293 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $764	Free Cancellation	Rating 8.5 1,394 reviews	Search EVA Air flights
China Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 817 reviews	Search China Airlines flights
Korean Air	PriceFrom $793	Free Cancellation	Rating 8.4 1,203 reviews	Search Korean Air flights
Delta	PriceFrom $825	Free Cancellation	Rating 7.9 8,363 reviews	Search Delta flights

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Ocean Shores

Renton

Olympia

Lynnwood

Kent

Redmond

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Cle Elum

Lakewood

Tukwila

Federal Way

Centralia

Fife

Westport

Kirkland

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.