What airlines fly to Thailand?

Asiana Airlines, Singapore Airlines and EVA Air are the top three most popular airlines that fly to Thailand from Seattle according to our data. Asiana Airlines is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 18 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 18 as of August 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.

$348 Cheap Flights from Seattle to Thailand in 2026

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 - 7:50 amSEA Seattle/Tacoma Intl-HKT Phuket City

32h 10m1 stop Singapore Changi

8:25 pm - 7:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

25h 40m1 stop Singapore Changi

$679Singapore Airlines

Fri, Feb 12 - Mon, Feb 22

10:15 am - 5:15 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

41h 00m1 stop Singapore Changi

1:35 pm - 8:10 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

32h 35m1 stop Singapore Changi

$693Singapore Airlines

Tue, Oct 20 - Mon, Oct 26

1:15 am - 9:45 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 30m1 stop Taipei City Taiwan Taoyuan Intl

2:40 am - 7:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

30h 35m1 stop Taipei City Taiwan Taoyuan Intl

$741China Airlines

Sun, Oct 4 - Sun, Oct 11

11:45 am - 12:10 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 25m1 stop Hong Kong Intl

7:10 pm - 10:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

28h 55m1 stop Hong Kong Intl

$746Cathay Pacific

Wed, Oct 7 - Wed, Oct 14

7:15 pm - 5:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

19h 50m1 stop Vancouver Intl

7:05 am - 2:22 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

21h 17m1 stop Vancouver Intl

$753Air Canada

Wed, Sep 16 - Wed, Oct 7

5:50 am - 5:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 15m1 stop Vancouver Intl

7:05 am - 10:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

17h 00m1 stop Vancouver Intl

$763Air Canada

Wed, Sep 16 - Wed, Oct 14

3:55 pm - 1:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

31h 40m2 stops Las Vegas Harry Reid Intl Incheon Intl

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

22h 05m1 stop Incheon Intl

$776Korean Air

Sun, Sep 6 - Wed, Sep 9

12:50 pm - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 45m1 stop Incheon Intl

9:50 am - 10:40 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

38h 50m1 stop Incheon Intl

$778Korean Air

Sun, Sep 6 - Thu, Sep 10

1:15 am - 12:10 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 55m1 stop Taipei City Taiwan Taoyuan Intl

5:50 pm - 6:10 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

15h 20m1 stop Taipei City Taiwan Taoyuan Intl

$839China Airlines

Tue, Sep 29 - Mon, Nov 30

10:50 am - 4:40 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

38h 50m1 stop Hong Kong Intl

7:55 am - 9:10 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 15m1 stop Hong Kong Intl

$911Cathay Pacific

Thu, Nov 19 - Wed, Dec 9

Cheap last minute flights

Enter your travel dates to find the best prices.

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

20h 30m1 stop Incheon Intl

11:45 am - 3:15 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

17h 30m1 stop Incheon Intl

$799Asiana Airlines

Fri, Aug 28 - Fri, Sep 4

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

$799Asiana Airlines

Thu, Aug 27 - Thu, Sep 3

10:15 am - 5:15 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

41h 00m1 stop Singapore Changi

9:40 am - 7:05 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 25m1 stop Singapore Changi

$801Singapore Airlines

Tue, Aug 25 - Mon, Nov 2

3:00 pm - 5:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

24h 05m1 stop Vancouver Intl

7:05 am - 2:17 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

21h 12m1 stop Vancouver Intl

$808Air Canada

Wed, Aug 26 - Fri, Sep 25

5:50 am - 5:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 15m1 stop Vancouver Intl

11:30 pm - 10:47 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

37h 17m2 stops Incheon Intl Vancouver Intl

$820Air Canada

Wed, Aug 26 - Sun, Sep 13

1:05 pm - 9:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 40m1 stop Incheon Intl

9:40 pm - 1:37 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

29h 57m1 stop Incheon Intl

$838Delta

Fri, Aug 28 - Sat, Sep 26

1:05 pm - 9:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 40m1 stop Incheon Intl

9:50 am - 1:37 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

17h 47m1 stop Incheon Intl

$838Delta

Sat, Aug 29 - Wed, Sep 23

1:20 pm - 1:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

21h 45m1 stop Incheon Intl

9:40 pm - 10:40 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

27h 00m1 stop Incheon Intl

$841Korean Air

Thu, Aug 27 - Thu, Sep 24

7:20 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

26h 15m2 stops San Francisco Incheon Intl

11:30 pm - 10:40 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

25h 10m1 stop Incheon Intl

$847Korean Air

Fri, Aug 28 - Sun, Sep 27

5:50 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

27h 45m2 stops Vancouver Intl Incheon Intl

11:30 pm - 10:47 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

37h 17m2 stops Incheon Intl Vancouver Intl

$864Multiple Airlines

Wed, Aug 26 - Sun, Sep 13

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Korean Air flights from Seattle to Thailand

Our best Korean Air deals on Seattle to Thailand flight tickets

Korean Air

Sep 6

SEA3:55 pmSeattle/Tacoma Intl

31h 40m

2 stops

BKK1:35 pmBangkok Suvarnabhumi

Sep 10

BKK11:30 pmBangkok Suvarnabhumi

47h 14m

2 stops

SEA8:44 amSeattle/Tacoma Intl

$780

Korean Air

Sep 6

SEA12:50 pmSeattle/Tacoma Intl

20h 45m

1 stop

BKK11:35 pmBangkok Suvarnabhumi

Sep 9

BKK9:40 pmBangkok Suvarnabhumi

27h 00m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$793

Korean Air

Sep 19

SEA12:50 pmSeattle/Tacoma Intl

22h 15m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Oct 5

BKK9:50 amBangkok Suvarnabhumi

38h 50m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$794

Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets

Singapore Airlines

Feb 12

SEA8:40 amSeattle/Tacoma Intl

32h 10m

1 stop

HKT7:50 amPhuket City

Feb 22

HKT8:25 pmPhuket City

25h 40m

1 stop

SEA7:05 amSeattle/Tacoma Intl

$679

Singapore Airlines

Oct 20

SEA10:15 amSeattle/Tacoma Intl

41h 00m

1 stop

BKK5:15 pmBangkok Suvarnabhumi

Oct 26

BKK1:35 pmBangkok Suvarnabhumi

32h 35m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$693

Singapore Airlines

Oct 20

SEA10:15 amSeattle/Tacoma Intl

19h 45m

1 stop

BKK8:00 pmBangkok Suvarnabhumi

Oct 22

BKK1:35 pmBangkok Suvarnabhumi

33h 10m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$694

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Fri 2/12

8:40 am-7:50 am

1 stop32h 10m

Phuket City

Mon 2/22

8:25 pm-7:05 am

1 stop25h 40m

$679

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 10/20

10:15 am-5:15 pm

1 stop41h 00m

Bangkok Suvarnabhumi

Mon 10/26

1:35 pm-8:10 am

1 stop32h 35m

$693

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 10/4

1:15 am-9:45 am

1 stop18h 30m

Bangkok Suvarnabhumi

Sun 10/11

2:40 am-7:15 pm

1 stop30h 35m

$741

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 10/7

11:45 am-12:10 am

1 stop22h 25m

Bangkok Suvarnabhumi

Wed 10/14

7:10 pm-10:05 am

1 stop28h 55m

$746

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 9/16

7:15 pm-5:05 am

1 stop19h 50m

Bangkok Suvarnabhumi

Wed 10/7

7:05 am-2:22 pm

1 stop21h 17m

$753

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 9/16

5:50 am-5:05 am

1 stop33h 15m

Bangkok Suvarnabhumi

Wed 10/14

7:05 am-10:05 am

1 stop17h 00m

$763

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 9/6

3:55 pm-1:35 pm

2 stops31h 40m

Bangkok Suvarnabhumi

Wed 9/9

2:35 am-10:40 am

1 stop22h 05m

$776

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 9/6

12:50 pm-11:35 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Thu 9/10

9:50 am-10:40 am

1 stop38h 50m

$778

Quickest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 9/29

1:15 am-12:10 pm

1 stop20h 55m

Bangkok Suvarnabhumi

Mon 11/30

5:50 pm-6:10 pm

1 stop15h 20m

$839

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 11/19

10:50 am-4:40 pm

1 stop38h 50m

Bangkok Suvarnabhumi

Wed 12/9

7:55 am-9:10 am

1 stop16h 15m

$911

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 $770.

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 $896 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 $779 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 6% 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	$348
Fastest flight time	18h 15m
Direct flights	None

The best one-way flight to Thailand from Seattle in the past 72 hours is $348. The best round-trip flight deal from Seattle to Thailand found on momondo in the last 72 hours is $679.

The fastest flight from Seattle to Thailand takes 18h 15m

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 18 as of August 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 1,019 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 69 reviews	Search Hainan Airlines flights
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,515 reviews	Search Delta flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,585 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $577	Free Cancellation	Rating 7.4 3,735 reviews	Search Qatar Airways flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,524 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $624	Free Cancellation	Rating 8.1 558 reviews	Search Asiana Airlines flights
ANA	PriceFrom $699	Free Cancellation	Rating 8.3 1,300 reviews	Search ANA flights
United Airlines	PriceFrom $702	Free Cancellation	Rating 7.4 10,113 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.