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, Asiana Airlines, and Philippine Airlines 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.

$313 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 - 10:05 amSEA Seattle/Tacoma Intl-HKT Phuket City

34h 25m1 stop Singapore Changi

2:05 pm - 7:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

32h 00m1 stop Singapore Changi

$666Singapore Airlines

Fri, Feb 12 - Mon, Feb 22

9:40 am - 12:20 pmSEA Seattle/Tacoma Intl-HKT Phuket City

36h 40m1 stop Singapore Changi

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

37h 25m1 stop Singapore Changi

$666Singapore Airlines

Tue, Oct 27 - Tue, Nov 10

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

$774Asiana Airlines

Tue, Sep 8 - Mon, Oct 19

12:10 am - 10:00 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

30h 50m1 stop Incheon Intl

12:20 pm - 1:55 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 35m1 stop Incheon Intl

$787Asiana Airlines

Sun, Nov 1 - Sun, Jan 31

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

20h 45m1 stop Incheon Intl

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

25h 10m1 stop Incheon Intl

$799Korean Air

Sat, Sep 26 - Sat, Oct 3

12:50 pm - 1:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 15m1 stop Incheon Intl

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

25h 10m1 stop Incheon Intl

$799Korean Air

Thu, Sep 10 - Sun, Sep 13

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

27h 45m2 stops Vancouver Intl Incheon Intl

3:45 pm - 2:22 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 37m2 stops Hong Kong Intl Vancouver Intl

$799Multiple Airlines

Wed, Sep 9 - Tue, Oct 20

1:35 pm - 12:45 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

21h 10m1 stop Incheon Intl

9:40 am - 11:50 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

17h 10m1 stop Incheon Intl

$813Delta

Sat, Oct 31 - Tue, Feb 2

12:35 pm - 9:30 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

41h 55m1 stop Incheon Intl

12:55 am - 11:50 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

25h 55m1 stop Incheon Intl

$813Delta

Wed, Nov 4 - Tue, Feb 2

7:15 pm - 9:00 amSEA Seattle/Tacoma Intl-HKT Phuket City

23h 45m2 stops Vancouver Intl Bangkok Suvarnabhumi

9:20 am - 10:05 amHKT Phuket City-SEA Seattle/Tacoma Intl

38h 45m2 stops Singapore Changi Vancouver Intl

$815Multiple Airlines

Wed, Sep 16 - Wed, Oct 7

Cheap last minute flights

Enter your travel dates to find the best prices.

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

33h 25m1 stop Incheon Intl

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

27h 40m1 stop Incheon Intl

$802Asiana Airlines

Mon, Aug 31 - Mon, Sep 14

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

33h 15m1 stop Vancouver Intl

7:05 am - 6:32 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

25h 27m1 stop Vancouver Intl

$814Air Canada

Mon, Aug 31 - Wed, Oct 21

10:40 am - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 55m2 stops Vancouver Intl Incheon Intl

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

21h 17m1 stop Vancouver Intl

$821Air Canada

Thu, Sep 3 - Wed, Oct 21

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

$823Asiana Airlines

Mon, Aug 31 - Mon, Sep 21

1:00 pm - 1:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 05m1 stop Incheon Intl

2:35 am - 1:14 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

24h 39m1 stop Incheon Intl

$838Delta

Tue, Sep 1 - Mon, Oct 19

1:00 pm - 1:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

22h 05m1 stop Incheon Intl

2:35 am - 1:14 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

24h 39m1 stop Incheon Intl

$838Delta

Tue, Sep 1 - Thu, Oct 22

1:55 am - 12:10 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 15m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 7:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

16h 15m1 stop Taipei City Taiwan Taoyuan Intl

$842China Airlines

Sun, Aug 30 - Mon, Sep 7

1:55 am - 4:20 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

24h 25m1 stop Taipei City Taiwan Taoyuan Intl

2:40 am - 7:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

31h 05m1 stop Taipei City Taiwan Taoyuan Intl

$842China Airlines

Sun, Aug 30 - Sun, Sep 6

12:50 pm - 9:45 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

18h 55m1 stop Incheon Intl

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

25h 10m1 stop Incheon Intl

$842Korean Air

Tue, Sep 1 - Thu, Sep 3

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

$842Korean Air

Tue, Sep 1 - Wed, Oct 21

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Asiana Airlines flights from Seattle to Thailand

Our best Asiana Airlines deals on Seattle to Thailand flight tickets

Asiana Airlines

Sep 8

SEA12:10 amSeattle/Tacoma Intl

20h 30m

1 stop

BKK10:40 amBangkok Suvarnabhumi

Oct 19

BKK1:35 amBangkok Suvarnabhumi

27h 40m

1 stop

SEA3:15 pmSeattle/Tacoma Intl

$774

Asiana Airlines

Nov 30

SEA12:10 amSeattle/Tacoma Intl

20h 05m

1 stop

BKK11:15 amBangkok Suvarnabhumi

Jan 14

BKK12:25 pmBangkok Suvarnabhumi

16h 30m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$787

Asiana Airlines

Oct 30

SEA12:10 amSeattle/Tacoma Intl

31h 50m

1 stop

BKK10:00 pmBangkok Suvarnabhumi

Nov 8

BKK11:55 pmBangkok Suvarnabhumi

29h 00m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$788

Delta flights from Seattle to Thailand

Our best Delta deals on Seattle to Thailand flight tickets

Delta

Nov 1

SEA12:35 pmSeattle/Tacoma Intl

21h 10m

1 stop

BKK12:45 amBangkok Suvarnabhumi

Nov 21

BKK12:55 amBangkok Suvarnabhumi

25h 56m

1 stop

SEA11:51 amSeattle/Tacoma Intl

$813

Delta

Nov 3

SEA12:35 pmSeattle/Tacoma Intl

19h 45m

1 stop

BKK11:20 pmBangkok Suvarnabhumi

Mar 31

BKK9:40 pmBangkok Suvarnabhumi

28h 20m

2 stops

SEA12:00 pmSeattle/Tacoma Intl

$825

Delta

Aug 31

SEA1:05 pmSeattle/Tacoma Intl

20h 30m

1 stop

BKK11:35 pmBangkok Suvarnabhumi

Oct 22

BKK2:35 amBangkok Suvarnabhumi

24h 39m

1 stop

SEA1:14 pmSeattle/Tacoma Intl

$838

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-10:05 am

1 stop34h 25m

Phuket City

Mon 2/22

2:05 pm-7:05 am

1 stop32h 00m

$666

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Tue 10/27

9:40 am-12:20 pm

1 stop36h 40m

Phuket City

Tue 11/10

8:40 am-7:05 am

1 stop37h 25m

$666

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 9/8

12:10 am-10:40 am

1 stop20h 30m

Bangkok Suvarnabhumi

Mon 10/19

1:35 am-3:15 pm

1 stop27h 40m

$774

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 11/1

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Sun 1/31

12:20 pm-1:55 pm

1 stop16h 35m

$787

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sat 9/26

12:50 pm-11:35 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Sat 10/3

11:30 pm-10:40 am

1 stop25h 10m

$799

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 9/10

12:50 pm-1:05 am

1 stop22h 15m

Bangkok Suvarnabhumi

Sun 9/13

11:30 pm-10:40 am

1 stop25h 10m

$799

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 9/9

5:50 am-11:35 pm

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 10/20

3:45 pm-2:22 pm

2 stops36h 37m

$799

Quickest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sat 10/31

1:35 pm-12:45 am

1 stop21h 10m

Bangkok Suvarnabhumi

Tue 2/2

9:40 am-11:50 am

1 stop17h 10m

$813

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 11/4

12:35 pm-9:30 pm

1 stop41h 55m

Bangkok Suvarnabhumi

Tue 2/2

12:55 am-11:50 am

1 stop25h 55m

$813

SeattlePhuket City

SEA Seattle/Tacoma Intl - HKT Phuket City

SEAHKT

Seattle/Tacoma Intl

Wed 9/16

7:15 pm-9:00 am

2 stops23h 45m

Phuket City

Wed 10/7

9:20 am-10:05 am

2 stops38h 45m

$815

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 26% 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	18h 55m
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 $666.

The fastest flight from Seattle to Thailand takes 18h 55m

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 8.4 70 reviews	Search Hainan Airlines flights
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,219 reviews	Search Korean Air flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,539 reviews	Search Delta flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,589 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $577	Free Cancellation	Rating 7.4 3,725 reviews	Search Qatar Airways flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,554 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 1,303 reviews	Search ANA flights
United Airlines	PriceFrom $702	Free Cancellation	Rating 7.4 10,136 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.