What airlines fly to Thailand?

Singapore Airlines, EVA Air and Asiana Airlines are the top three most popular airlines that fly to Thailand from Seattle according to our data. Singapore Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 17 different airlines that fly to Thailand on a routine basis, so you have a few additional options to choose from.

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

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

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

Prices for flights from Seattle/Tacoma Intl Airport to Thailand were last updated today.

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

The number of operators available for flights from Seattle/Tacoma Intl Airport to Thailand is 17 as of October 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Thailand.

What documentation or ID do you need to fly to Thailand?

The required travel and health documents for your Thailand trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Thailand. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$313 Cheap Flights from Seattle to Thailand in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 am - 5:10 pmSEA Seattle/Tacoma Intl-HKT Phuket City

41h 30m1 stop Singapore Changi

8:40 am - 7:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

37h 25m1 stop Singapore Changi

$658Singapore Airlines

Tue, Feb 23 - Tue, Mar 2

8:40 am - 5:10 pmSEA Seattle/Tacoma Intl-HKT Phuket City

41h 30m1 stop Singapore Changi

8:40 am - 7:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

37h 25m1 stop Singapore Changi

$673Singapore Airlines

Sun, Nov 29 - Mon, Dec 7

9:30 pm - 12:05 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

23h 35m1 stop Manila Ninoy Aquino Intl

9:55 am - 6:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

23h 50m1 stop Manila Ninoy Aquino Intl

$783Philippine Airlines

Mon, Nov 9 - Wed, Dec 9

11:05 am - 10:40 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 35m1 stop Chongqing Jiangbei Intl

4:20 pm - 8:20 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

31h 00m1 stop Beijing Capital

$786Hainan Airlines

Thu, Oct 29 - Fri, Nov 13

11:05 am - 10:40 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 35m1 stop Chongqing Jiangbei Intl

11:50 am - 8:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

35h 15m1 stop Chongqing Jiangbei Intl

$786Hainan Airlines

Thu, Oct 29 - Wed, Nov 18

9:30 pm - 10:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

34h 15m1 stop Manila Ninoy Aquino Intl

11:40 pm - 6:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

34h 05m1 stop Manila Ninoy Aquino Intl

$796Philippine Airlines

Thu, Nov 19 - Wed, Dec 9

12:10 am - 1:25 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 15m1 stop Incheon Intl

1:05 am - 9:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

23h 00m1 stop Incheon Intl

$807Korean Air

Sun, Nov 8 - Sun, Nov 22

12:10 am - 1:05 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

21h 55m1 stop Taipei City Taiwan Taoyuan Intl

10:55 am - 6:10 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

22h 15m1 stop Taipei City Taiwan Taoyuan Intl

$819China Airlines

Tue, Dec 1 - Sun, Dec 20

12:10 am - 9:50 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

2:35 am - 6:10 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

30h 35m1 stop Taipei City Taiwan Taoyuan Intl

$822China Airlines

Sun, Feb 7 - Sat, Feb 27

12:00 pm - 9:30 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

19h 30m1 stop Incheon Intl

9:50 am - 2:55 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

19h 05m1 stop Incheon Intl

$822Korean Air

Mon, Mar 15 - Wed, Apr 7

Cheap last minute flights

Enter your travel dates to find the best prices.

11:10 pm - 10:40 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 30m1 stop Manila Ninoy Aquino Intl

10:20 am - 8:05 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

23h 45m1 stop Manila Ninoy Aquino Intl

$796Philippine Airlines

Thu, Oct 8 - Thu, Oct 15

11:10 pm - 12:10 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

23h 00m1 stop Manila Ninoy Aquino Intl

7:50 pm - 7:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

37h 55m1 stop Manila Ninoy Aquino Intl

$796Philippine Airlines

Thu, Oct 8 - Sat, Oct 31

9:55 am - 7:00 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

43h 05m1 stop Singapore Changi

9:40 am - 8:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 25m1 stop Singapore Changi

$813Singapore Airlines

Fri, Oct 9 - Wed, Oct 28

9:55 am - 7:00 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

43h 05m1 stop Singapore Changi

9:40 am - 8:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 25m1 stop Singapore Changi

$819Singapore Airlines

Fri, Oct 9 - Wed, Oct 28

12:30 am - 1:05 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 35m1 stop Taipei City Taiwan Taoyuan Intl

12:25 pm - 7:20 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

20h 55m1 stop Taipei City Taiwan Taoyuan Intl

$852EVA Air

Tue, Oct 6 - Wed, Oct 14

12:10 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 25m1 stop Incheon Intl

2:35 am - 10:40 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

22h 05m1 stop Incheon Intl

$863Multiple Airlines

Tue, Oct 6 - Tue, Oct 13

12:10 am - 10:40 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 30m1 stop Incheon Intl

1:35 am - 3:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

27h 40m1 stop Incheon Intl

$870Asiana Airlines

Sun, Oct 4 - Wed, Oct 7

12:10 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 25m1 stop Incheon Intl

2:35 am - 10:40 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

22h 05m1 stop Incheon Intl

$882Multiple Airlines

Tue, Oct 6 - Tue, Oct 13

1:30 am - 11:10 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

19h 40m1 stop Taipei City Taiwan Taoyuan Intl

4:45 pm - 7:20 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 35m1 stop Taipei City Taiwan Taoyuan Intl

$890EVA Air

Sat, Oct 3 - Tue, Oct 6

12:10 am - 10:40 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 30m1 stop Incheon Intl

1:35 am - 9:01 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

33h 26m2 stops Incheon Intl San Francisco

$1,512Asiana Airlines

Sun, Oct 4 - Mon, Oct 12

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Hainan Airlines flights from Seattle to Thailand

Our best Hainan Airlines deals on Seattle to Thailand flight tickets

Hainan Airlines

Oct 29

SEA11:05 amSeattle/Tacoma Intl

33h 35m

1 stop

BKK10:40 amBangkok Suvarnabhumi

Nov 13

BKK4:20 pmBangkok Suvarnabhumi

31h 00m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$786

Hainan Airlines

Oct 29

SEA11:05 amSeattle/Tacoma Intl

33h 35m

1 stop

BKK10:40 amBangkok Suvarnabhumi

Nov 13

BKK4:20 pmBangkok Suvarnabhumi

31h 00m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$788

Hainan Airlines

Oct 29

SEA11:05 amSeattle/Tacoma Intl

33h 35m

1 stop

BKK10:40 amBangkok Suvarnabhumi

Nov 13

BKK4:20 pmBangkok Suvarnabhumi

31h 00m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$789

Korean Air flights from Seattle to Thailand

Our best Korean Air deals on Seattle to Thailand flight tickets

Korean Air

Nov 8

SEA12:10 amSeattle/Tacoma Intl

22h 15m

1 stop

BKK1:25 pmBangkok Suvarnabhumi

Nov 22

BKK1:05 amBangkok Suvarnabhumi

23h 00m

1 stop

SEA9:05 amSeattle/Tacoma Intl

$807

Korean Air

Feb 25

SEA11:00 amSeattle/Tacoma Intl

19h 30m

1 stop

BKK9:30 pmBangkok Suvarnabhumi

Apr 11

BKK11:30 pmBangkok Suvarnabhumi

25h 10m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$822

Korean Air

Feb 25

SEA5:55 pmSeattle/Tacoma Intl

28h 30m

2 stops

BKK1:25 pmBangkok Suvarnabhumi

Apr 4

BKK11:30 pmBangkok Suvarnabhumi

25h 10m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$828

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Tue 2/23

8:40 am-5:10 pm

1 stop41h 30m

Phuket City

Tue 3/2

8:40 am-7:05 am

1 stop37h 25m

$658

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Sun 11/29

8:40 am-5:10 pm

1 stop41h 30m

Phuket City

Mon 12/7

8:40 am-7:05 am

1 stop37h 25m

$673

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 11/9

9:30 pm-12:05 pm

1 stop23h 35m

Bangkok Suvarnabhumi

Wed 12/9

9:55 am-6:45 pm

1 stop23h 50m

$783

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 10/29

11:05 am-10:40 am

1 stop33h 35m

Bangkok Suvarnabhumi

Fri 11/13

4:20 pm-8:20 am

1 stop31h 00m

$786

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 10/29

11:05 am-10:40 am

1 stop33h 35m

Bangkok Suvarnabhumi

Wed 11/18

11:50 am-8:05 am

1 stop35h 15m

$786

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 11/19

9:30 pm-10:45 pm

1 stop34h 15m

Bangkok Suvarnabhumi

Wed 12/9

11:40 pm-6:45 pm

1 stop34h 05m

$796

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 11/8

12:10 am-1:25 pm

1 stop22h 15m

Bangkok Suvarnabhumi

Sun 11/22

1:05 am-9:05 am

1 stop23h 00m

$807

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 12/1

12:10 am-1:05 pm

1 stop21h 55m

Bangkok Suvarnabhumi

Sun 12/20

10:55 am-6:10 pm

1 stop22h 15m

$819

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 2/7

12:10 am-9:50 am

1 stop18h 40m

Bangkok Suvarnabhumi

Sat 2/27

2:35 am-6:10 pm

1 stop30h 35m

$822

Quickest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 3/15

12:00 pm-9:30 pm

1 stop19h 30m

Bangkok Suvarnabhumi

Wed 4/7

9:50 am-2:55 pm

1 stop19h 05m

$822

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 Seattle to Thailand

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

What is the cheapest month to fly to Thailand?

The month of March is, on average, the cheapest month to fly to Thailand from Seattle, with most prices found around $753. If you are unable to visit Thailand during the month of March, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $785.

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

You are more likely to see cheaper flights to Thailand from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $898 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Thailand from Seattle for as low as $808 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 27% on your flight if you consider stops on a Seattle to Thailand flight.

Cheap Seattle to Thailand flight deals and tips

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

Best Price Found	$313
Fastest flight time	19h 20m
Direct flights	None

The best one-way flight to Thailand from Seattle in the past 72 hours is $313. The best round-trip flight deal from Seattle to Thailand found on momondo in the last 72 hours is $658.

The fastest flight from Seattle to Thailand takes 19h 20m

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

Search flight deals

Frequently asked questions about flying from Seattle to Thailand

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Thailand?
Prices for flights from Seattle/Tacoma Intl Airport to Thailand were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Thailand?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Thailand is 17 as of October 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Thailand?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Thailand.
What documentation or ID do you need to fly to Thailand?
The required travel and health documents for your Thailand trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Thailand. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Seattle to Thailand

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

Airline	Rating	Free Cancellation	Price
Philippine Airlines	PriceFrom $149	Free Cancellation	Rating 7.3 1,028 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 71 reviews	Search Hainan Airlines flights
Air Canada	PriceFrom $428	Free Cancellation	Rating 7.1 11,717 reviews	Search Air Canada flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,628 reviews	Search Delta flights
Singapore Airlines	PriceFrom $511	Free Cancellation	Rating 8.2 1,619 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $577	Free Cancellation	Rating 7.4 3,727 reviews	Search Qatar Airways flights
Asiana Airlines	PriceFrom $628	Free Cancellation	Rating 8.1 563 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $660	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
ANA	PriceFrom $701	Free Cancellation	Rating 8.3 1,319 reviews	Search ANA flights
United Airlines	PriceFrom $702	Free Cancellation	Rating 7.4 10,286 reviews	Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Thailand for you.

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

Yes. All flights to Thailand from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Thailand?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Thailand.

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

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