What airlines fly to Thailand?

Asiana Airlines, EVA Air and Singapore Airlines 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 29% 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?

Korean Air, Delta, and United 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 17 as of June 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.

$407 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.

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

10:05 am - 8:10 am

HKT

SEA

36h 05m

1 stop

$659Singapore Airlines

อ., ต.ค. 20 - ศ., ต.ค. 30

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

11:05 am - 8:10 am

HKT

SEA

35h 05m

1 stop

$660Singapore Airlines

อ., ต.ค. 20 - ศ., ต.ค. 30

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

10:05 am - 8:10 am

HKT

SEA

36h 05m

1 stop

$661Singapore Airlines

อ., ต.ค. 20 - ศ., ต.ค. 30

11:00 am - 10:55 pm

SEA

CNX

20h 55m

1 stop

12:15 am - 9:00 am

CNX

SEA

23h 45m

1 stop

$810Korean Air

อา., พ.ย. 1 - อา., พ.ย. 22

7:20 am - 10:55 pm

SEA

CNX

24h 35m

2 stops

12:15 am - 9:00 am

CNX

SEA

23h 45m

1 stop

$816Korean Air

อา., พ.ย. 1 - อา., พ.ย. 22

7:20 am - 11:20 pm

SEA

BKK

25h 00m

2 stops

11:15 pm - 9:00 am

BKK

SEA

24h 45m

1 stop

$964Delta

ส., พ.ย. 28 - อ., ธ.ค. 15

1:00 pm - 12:45 am

SEA

BKK

20h 45m

1 stop

9:30 pm - 11:56 am

BKK

SEA

29h 26m

1 stop

$966Delta

พฤ., พ.ย. 19 - พ., ธ.ค. 9

12:10 am - 10:00 pm

SEA

BKK

30h 50m

1 stop

11:55 pm - 1:55 pm

BKK

SEA

29h 00m

1 stop

$972Asiana Airlines

อ., พ.ย. 17 - พ., ธ.ค. 2

1:30 am - 8:45 am

SEA

KBV

41h 15m

2 stops

9:50 am - 7:10 pm

KBV

SEA

23h 20m

2 stops

$1,172EVA Air

พ., ต.ค. 21 - จ., ต.ค. 26

12:10 am - 6:55 pm

SEA

USM

27h 45m

2 stops

7:00 am - 6:10 pm

USM

SEA

26h 10m

2 stops

$1,214EVA Air

อ., ธ.ค. 1 - พ., ธ.ค. 9

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Asiana Airlines flights from Seattle to Thailand

Our best Asiana Airlines deals on Seattle to Thailand flight tickets

Asiana Airlines

Nov 17

SEA12:10 amSeattle/Tacoma Intl

30h 50m

1 stop

BKK10:00 pmBangkok Suvarnabhumi

Dec 7

BKK12:20 pmBangkok Suvarnabhumi

16h 35m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$972

Asiana Airlines

Jul 26

SEA12:10 amSeattle/Tacoma Intl

33h 25m

1 stop

BKK11:35 pmBangkok Suvarnabhumi

Sep 10

BKK1:35 amBangkok Suvarnabhumi

27h 40m

1 stop

SEA3:15 pmSeattle/Tacoma Intl

$1,006

Qatar Airways flights from Seattle to Thailand

Our best Qatar Airways deals on Seattle to Thailand flight tickets

Qatar Airways

Jun 17

SEA4:25 pmSeattle/Tacoma Intl

31h 00m

1 stop

BKK1:25 pmBangkok Suvarnabhumi

Jul 5

BKK2:30 amBangkok Suvarnabhumi

23h 55m

1 stop

SEA12:25 pmSeattle/Tacoma Intl

$1,201

Qatar Airways

Jun 17

SEA4:25 pmSeattle/Tacoma Intl

31h 00m

1 stop

BKK1:25 pmBangkok Suvarnabhumi

Jun 22

BKK2:30 amBangkok Suvarnabhumi

24h 10m

1 stop

SEA12:40 pmSeattle/Tacoma Intl

$1,302

Qatar Airways

Oct 29

SEA5:05 pmSeattle/Tacoma Intl

33h 45m

2 stops

UTP4:50 pmUtapao Rayong Pattaya

Nov 2

UTP1:00 pmUtapao Rayong Pattaya

37h 40m

2 stops

SEA11:40 amSeattle/Tacoma Intl

$1,382

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

อ. 10/20

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

ศ. 10/30

10:05 am-8:10 am

1 stop36h 05m

$659

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

อ. 10/20

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

ศ. 10/30

11:05 am-8:10 am

1 stop35h 05m

$660

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

อ. 10/20

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

ศ. 10/30

10:05 am-8:10 am

1 stop36h 05m

$661

Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

อา. 11/1

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

อา. 11/22

12:15 am-9:00 am

1 stop23h 45m

$810

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

อา. 11/1

7:20 am-10:55 pm

2 stops24h 35m

Chiang Mai

อา. 11/22

12:15 am-9:00 am

1 stop23h 45m

$816

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

ส. 11/28

7:20 am-11:20 pm

2 stops25h 00m

Bangkok Suvarnabhumi

อ. 12/15

11:15 pm-9:00 am

1 stop24h 45m

$964

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

พฤ. 11/19

1:00 pm-12:45 am

1 stop20h 45m

Bangkok Suvarnabhumi

พ. 12/9

9:30 pm-11:56 am

1 stop29h 26m

$966

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

อ. 11/17

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

พ. 12/2

11:55 pm-1:55 pm

1 stop29h 00m

$972

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

พ. 10/21

1:30 am-8:45 am

2 stops41h 15m

Krabi

จ. 10/26

9:50 am-7:10 pm

2 stops23h 20m

$1,172

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

อ. 12/1

12:10 am-6:55 pm

2 stops27h 45m

Ko Samui

พ. 12/9

7:00 am-6:10 pm

2 stops26h 10m

$1,214

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 September is, on average, the cheapest month to fly to Thailand from Seattle, with most prices found around $498. If you are unable to visit Thailand during the month of September, then departing from Seattle during the month May is also very affordable. Most momondo users find prices during this month for around $500.

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 $876 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 $709 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 47% 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	18h 40m
Direct flights	None

The fastest flight from Seattle to Thailand takes 18h 40m

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 June 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 7.3 999 reviews	Search Philippine Airlines flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,543 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,168 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $625	Free Cancellation	Rating 8.1 541 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.3 1,232 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.8 8,403 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,811 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,371 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $729	Free Cancellation	Rating 8.3 828 reviews	Search China 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.