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?

Delta, United Airlines, 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.

$397 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.

8:45 am - 5:00 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

41h 15m1 stop Singapore Changi

9:40 am - 7:10 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 30m1 stop Singapore Changi

$661Singapore Airlines

Tue, Nov 3 - Tue, Nov 17

8:45 am - 5:00 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

41h 15m1 stop Singapore Changi

9:40 am - 7:10 amBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

36h 30m1 stop Singapore Changi

$665Singapore Airlines

Tue, Nov 3 - Sat, Nov 14

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

24h 05m1 stop Vancouver Intl

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

21h 17m1 stop Vancouver Intl

$741Air Canada

Mon, Sep 7 - Mon, Sep 21

12:10 am - 11:15 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 05m1 stop Incheon Intl

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

16h 35m1 stop Incheon Intl

$752Asiana Airlines

Thu, Nov 5 - Sun, Nov 22

10:40 am - 5:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

28h 25m1 stop Vancouver Intl

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

25h 27m1 stop Vancouver Intl

$753Air Canada

Mon, Sep 7 - Wed, Sep 30

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

30h 50m1 stop Incheon Intl

11:55 pm - 1:55 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

29h 00m1 stop Incheon Intl

$758Asiana Airlines

Tue, Nov 17 - Sat, Dec 5

10:40 am - 5:05 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

28h 25m1 stop Vancouver Intl

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

36h 37m2 stops Hong Kong Intl Vancouver Intl

$775Multiple Airlines

Mon, Sep 7 - Mon, Sep 21

7:15 pm - 9:35 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

24h 20m2 stops Vancouver Intl Hong Kong Intl

1:35 am - 2:22 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

26h 47m2 stops Incheon Intl Vancouver Intl

$788Multiple Airlines

Sun, Sep 13 - Wed, Oct 14

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

$811Korean Air

Sun, Oct 4 - Sun, Oct 18

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

22h 15m1 stop Incheon Intl

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

38h 50m1 stop Incheon Intl

$832Korean Air

Sun, Sep 27 - Sun, Oct 4

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

18h 00m1 stop Incheon Intl

$840Asiana Airlines

Sun, Aug 16 - Mon, Aug 31

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

$842Korean Air

Tue, Aug 18 - Wed, Sep 16

1:05 pm - 11:35 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

20h 30m1 stop Incheon Intl

2:35 am - 1:37 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

25h 02m1 stop Incheon Intl

$866Delta

Tue, Aug 18 - Sun, Aug 30

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

18h 40m1 stop Incheon Intl

11:30 pm - 1:37 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

28h 07m1 stop Incheon Intl

$867Delta

Mon, Aug 17 - Mon, Aug 31

1:55 am - 1:25 amSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

33h 30m1 stop Taipei City Taiwan Taoyuan Intl

1:20 pm - 7:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

20h 25m1 stop Taipei City Taiwan Taoyuan Intl

$875China Airlines

Mon, Aug 17 - Sun, Aug 30

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

24h 25m1 stop Taipei City Taiwan Taoyuan Intl

10:50 am - 7:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

22h 55m1 stop Taipei City Taiwan Taoyuan Intl

$875China Airlines

Mon, Aug 17 - Sat, Aug 29

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

22h 55m2 stops Vancouver Intl Incheon Intl

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

17h 00m1 stop Vancouver Intl

$875Air Canada

Tue, Aug 18 - Wed, Sep 16

2:10 am - 11:30 pmSEA Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi

31h 20m1 stop Taipei City Taiwan Taoyuan Intl

8:30 am - 7:50 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

25h 20m1 stop Taipei City Taiwan Taoyuan Intl

$877EVA Air

Mon, Aug 17 - Thu, Aug 27

4:23 pm - 10:10 pmSEA Seattle/Tacoma Intl-HKT Phuket City

39h 47m2 stops Las Vegas Harry Reid Intl Incheon Intl

11:25 pm - 4:13 pmHKT Phuket City-SEA Seattle/Tacoma Intl

30h 48m2 stops Incheon Intl San Francisco

$977Korean Air

Sun, Aug 16 - Mon, Aug 31

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

20h 30m1 stop Incheon Intl

1:35 am - 3:45 pmBKK Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl

28h 10m1 stop Incheon Intl

$1,375Asiana Airlines

Fri, Aug 14 - Sun, Aug 16

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Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets

Singapore Airlines

Nov 3

SEA8:45 amSeattle/Tacoma Intl

41h 15m

1 stop

BKK5:00 pmBangkok Suvarnabhumi

Nov 17

BKK9:40 amBangkok Suvarnabhumi

36h 30m

1 stop

SEA7:10 amSeattle/Tacoma Intl

$661

Singapore Airlines

Nov 3

SEA8:45 amSeattle/Tacoma Intl

41h 15m

1 stop

BKK5:00 pmBangkok Suvarnabhumi

Nov 14

BKK9:40 amBangkok Suvarnabhumi

36h 30m

1 stop

SEA7:10 amSeattle/Tacoma Intl

$665

Singapore Airlines

Oct 29

SEA9:45 amSeattle/Tacoma Intl

38h 50m

1 stop

BKK2:35 pmBangkok Suvarnabhumi

Nov 13

BKK9:40 amBangkok Suvarnabhumi

36h 30m

1 stop

SEA7:10 amSeattle/Tacoma Intl

$668

Air Canada flights from Seattle to Thailand

Our best Air Canada deals on Seattle to Thailand flight tickets

Air Canada

Sep 7

SEA3:00 pmSeattle/Tacoma Intl

24h 05m

1 stop

BKK5:05 amBangkok Suvarnabhumi

Sep 21

BKK7:05 amBangkok Suvarnabhumi

21h 17m

1 stop

SEA2:22 pmSeattle/Tacoma Intl

$741

Air Canada

Sep 7

SEA10:40 amSeattle/Tacoma Intl

28h 25m

1 stop

BKK5:05 amBangkok Suvarnabhumi

Sep 30

BKK7:05 amBangkok Suvarnabhumi

25h 27m

1 stop

SEA6:32 pmSeattle/Tacoma Intl

$753

Air Canada

Sep 7

SEA3:00 pmSeattle/Tacoma Intl

24h 05m

1 stop

BKK5:05 amBangkok Suvarnabhumi

Sep 21

BKK7:05 amBangkok Suvarnabhumi

21h 17m

1 stop

SEA2:22 pmSeattle/Tacoma Intl

$755

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 11/3

8:45 am-5:00 pm

1 stop41h 15m

Bangkok Suvarnabhumi

Tue 11/17

9:40 am-7:10 am

1 stop36h 30m

$661

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 11/3

8:45 am-5:00 pm

1 stop41h 15m

Bangkok Suvarnabhumi

Sat 11/14

9:40 am-7:10 am

1 stop36h 30m

$665

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 9/7

3:00 pm-5:05 am

1 stop24h 05m

Bangkok Suvarnabhumi

Mon 9/21

7:05 am-2:22 pm

1 stop21h 17m

$741

Quickest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 11/5

12:10 am-11:15 am

1 stop20h 05m

Bangkok Suvarnabhumi

Sun 11/22

12:20 pm-1:55 pm

1 stop16h 35m

$752

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 9/7

10:40 am-5:05 am

1 stop28h 25m

Bangkok Suvarnabhumi

Wed 9/30

7:05 am-6:32 pm

1 stop25h 27m

$753

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 11/17

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Sat 12/5

11:55 pm-1:55 pm

1 stop29h 00m

$758

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 9/7

10:40 am-5:05 am

1 stop28h 25m

Bangkok Suvarnabhumi

Mon 9/21

3:45 pm-2:22 pm

2 stops36h 37m

$775

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 9/13

7:15 pm-9:35 am

2 stops24h 20m

Bangkok Suvarnabhumi

Wed 10/14

1:35 am-2:22 pm

2 stops26h 47m

$788

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 10/4

12:50 pm-11:35 pm

1 stop20h 45m

Bangkok Suvarnabhumi

Sun 10/18

11:30 pm-10:40 am

1 stop25h 10m

$811

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 9/27

12:50 pm-1:05 am

1 stop22h 15m

Bangkok Suvarnabhumi

Sun 10/4

9:50 am-10:40 am

1 stop38h 50m

$832

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 $752. 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 $893 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 $740 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 10% 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

Fastest flight time	19h 05m
Direct flights	None

The fastest flight from Seattle to Thailand takes 19h 05m

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 1,014 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 68 reviews	Search Hainan Airlines flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,584 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $577	Free Cancellation	Rating 7.4 3,741 reviews	Search Qatar Airways flights
Asiana Airlines	PriceFrom $623	Free Cancellation	Rating 8.1 556 reviews	Search Asiana Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,470 reviews	Search Air Canada flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
ANA	PriceFrom $690	Free Cancellation	Rating 8.3 1,297 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.