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

Hainan Airlines, Philippine Airlines, and China Airlines 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 19h 02m on average. On the other hand, flying from Chiang Mai to Seattle takes 23h 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?

EVA Air, Philippine Airlines and STARLUX Airlines 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 27% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 9 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 October 2025, there are 9 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.

$408 Cheap Flights from Thailand to Seattle in 2025/26

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Recent round-trip flight deals from Thailand to Seattle

Enter your travel dates to find the best prices.

6:45 pm - 6:40 pmBKK-SEA

38h 55m1 stop

9:30 pm - 11:00 pmSEA-BKK

34h 30m1 stop

$634Philippine Airlines

Find Deal

Tue, Nov 18 - Tue, Nov 25

1:05 am - 8:00 amBKK-SEA

21h 55m1 stop

10:00 am - 11:25 pmSEA-BKK

22h 25m1 stop

$637Hainan Airlines

Find Deal

Mon, Nov 17 - Tue, Nov 25

5:40 pm - 3:05 pmBKK-SEA

36h 25m1 stop

11:45 pm - 12:35 pmSEA-BKK

21h 50m1 stop

$761STARLUX Airlines

Find Deal

Sun, Nov 23 - Sun, Dec 7

12:25 pm - 6:50 pmBKK-SEA

20h 25m1 stop

1:50 am - 1:05 pmSEA-BKK

21h 15m1 stop

$764EVA Air

Find Deal

Tue, Mar 31 - Thu, Jun 4

2:15 am - 6:10 pmBKK-SEA

30h 55m1 stop

1:10 am - 12:35 pmSEA-BKK

21h 25m1 stop

$767EVA Air

Find Deal

Mon, Mar 2 - Mon, Mar 23

5:40 pm - 3:05 pmBKK-SEA

36h 25m1 stop

11:45 pm - 4:30 pmSEA-BKK

25h 45m1 stop

$794STARLUX Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 29

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

11:00 am - 10:55 pmSEA-CNX

20h 55m1 stop

$1,091Delta

Find Deal

Sun, Nov 9 - Fri, Dec 5

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

11:00 am - 10:55 pmSEA-CNX

20h 55m1 stop

$1,093Delta

Find Deal

Sun, Nov 9 - Fri, Dec 5

12:15 am - 9:00 amCNX-SEA

23h 45m1 stop

9:39 pm - 10:55 pmSEA-CNX

34h 16m2 stops

$1,245Korean Air

Find Deal

Sat, Dec 6 - Sun, Dec 14

12:15 am - 10:59 pmCNX-SEA

37h 44m2 stops

7:10 am - 10:55 pmSEA-CNX

24h 45m2 stops

$1,282Korean Air

Find Deal

Sun, Nov 9 - Fri, Dec 5

Philippine Airlines flights from Thailand to Seattle

Our best Philippine Airlines deals on Thailand to Seattle flight tickets

Philippine Airlines

Nov 18

BKK6:45 pmBangkok Suvarnabhumi

38h 55m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

Nov 25

SEA9:30 pmSeattle/Tacoma Intl

34h 30m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

$634

Find similar

Philippine Airlines

Mar 3

BKK6:45 pmBangkok Suvarnabhumi

38h 55m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

Mar 24

SEA10:30 pmSeattle/Tacoma Intl

34h 30m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

$638

Find similar

Philippine Airlines

Mar 3

BKK11:50 pmBangkok Suvarnabhumi

33h 50m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

Mar 24

SEA10:30 pmSeattle/Tacoma Intl

29h 20m

1 stop

BKK5:50 pmBangkok Suvarnabhumi

$639

Find similar

Hainan Airlines flights from Thailand to Seattle

Our best Hainan Airlines deals on Thailand to Seattle flight tickets

Hainan Airlines

Oct 31

BKK4:20 pmBangkok Suvarnabhumi

30h 40m

1 stop

SEA9:00 amSeattle/Tacoma Intl

Nov 15

SEA10:00 amSeattle/Tacoma Intl

22h 25m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

$630

Find similar

Hainan Airlines

Nov 17

BKK1:05 amBangkok Suvarnabhumi

21h 55m

1 stop

SEA8:00 amSeattle/Tacoma Intl

Nov 25

SEA10:00 amSeattle/Tacoma Intl

22h 25m

1 stop

BKK11:25 pmBangkok Suvarnabhumi

$637

Find similar

Hainan Airlines

Dec 19

BKK1:05 amBangkok Suvarnabhumi

21h 55m

1 stop

SEA8:00 amSeattle/Tacoma Intl

Jan 1

SEA10:05 amSeattle/Tacoma Intl

41h 00m

2 stops

BKK6:05 pmBangkok Suvarnabhumi

$663

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 11/18

6:45 pm-6:40 pm

1 stop38h 55m

Seattle/Tacoma Intl

Tue 11/25

9:30 pm-11:00 pm

1 stop34h 30m

$634

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 11/17

1:05 am-8:00 am

1 stop21h 55m

Seattle/Tacoma Intl

Tue 11/25

10:00 am-11:25 pm

1 stop22h 25m

$637

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Sun 11/23

5:40 pm-3:05 pm

1 stop36h 25m

Seattle/Tacoma Intl

Sun 12/7

11:45 pm-12:35 pm

1 stop21h 50m

$761

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 3/31

12:25 pm-6:50 pm

1 stop20h 25m

Seattle/Tacoma Intl

Thu 6/4

1:50 am-1:05 pm

1 stop21h 15m

$764

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 3/2

2:15 am-6:10 pm

1 stop30h 55m

Seattle/Tacoma Intl

Mon 3/23

1:10 am-12:35 pm

1 stop21h 25m

$767

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 12/11

5:40 pm-3:05 pm

1 stop36h 25m

Seattle/Tacoma Intl

Mon 12/29

11:45 pm-4:30 pm

1 stop25h 45m

$794

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 11/9

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Fri 12/5

11:00 am-10:55 pm

1 stop20h 55m

$1,091

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 11/9

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Fri 12/5

11:00 am-10:55 pm

1 stop20h 55m

$1,093

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sat 12/6

12:15 am-9:00 am

1 stop23h 45m

Seattle/Tacoma Intl

Sun 12/14

9:39 pm-10:55 pm

2 stops34h 16m

$1,245

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 11/9

12:15 am-10:59 pm

2 stops37h 44m

Seattle/Tacoma Intl

Fri 12/5

7:10 am-10:55 pm

2 stops24h 45m

$1,282

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 $805. If you don’t want to visit Seattle in February, then you should wait until October to fly from Thailand, when ticket prices are also cheap, with an average price of $816.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Thailand is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $960. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Thailand because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,014.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Thailand at noon is the least expensive time of day to depart. momondo users have found prices as low as $651 when looking at flights departing at noon. Flights to Seattle are more costly in the afternoon, with an average ticket price of $1,039. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $902 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 16% 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

Direct flights	None

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 October 2025, there are 9 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 $594	Free Cancellation	Rating 7.3 923 reviews	Search Philippine Airlines flights
Asiana Airlines	PriceFrom $651	Free Cancellation	Rating 8.2 486 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $705	Free Cancellation	Rating 8.9 219 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $775	Free Cancellation	Rating 8.4 1,258 reviews	Search EVA Air flights
ANA	PriceFrom $781	Free Cancellation	Rating 8.4 990 reviews	Search ANA flights
China Airlines	PriceFrom $793	Free Cancellation	Rating 8.2 774 reviews	Search China Airlines flights
Korean Air	PriceFrom $801	Free Cancellation	Rating 8.4 1,153 reviews	Search Korean Air flights
Delta	PriceFrom $829	Free Cancellation	Rating 7.9 7,982 reviews	Search Delta flights
Japan Airlines	PriceFrom $922	Free Cancellation	Rating 8.3 1,589 reviews	Search Japan Airlines flights

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Fife

Redmond

Cle Elum

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Shoreline

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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.