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 30% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 16 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 16 as of May 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

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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 - 7:15 pm

SEA

HKT

19h 00m

1 stop

10:05 am - 8:10 am

HKT

SEA

36h 05m

1 stop

$680Singapore Airlines

Thu, Oct 22 - Sat, Oct 31

10:15 am - 2:10 pm

SEA

HKT

37h 55m

1 stop

11:05 am - 8:10 am

HKT

SEA

35h 05m

1 stop

$681Singapore Airlines

Thu, Oct 22 - Sat, Oct 31

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

8:40 am - 8:10 am

HKT

SEA

37h 30m

1 stop

$715Singapore Airlines

Sat, Oct 10 - Mon, Oct 26

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

6:00 pm - 8:10 am

HKT

SEA

28h 10m

1 stop

$722Singapore Airlines

Sat, Oct 10 - Mon, Oct 26

12:35 pm - 11:35 pm

SEA

BKK

21h 00m

1 stop

9:30 pm - 12:00 pm

BKK

SEA

29h 30m

1 stop

$867Delta

Thu, Oct 15 - Mon, Mar 1

12:00 pm - 10:55 pm

SEA

CNX

20h 55m

1 stop

12:15 am - 9:00 am

CNX

SEA

23h 45m

1 stop

$971Korean Air

Thu, Oct 29 - Wed, Nov 11

7:20 am - 10:55 pm

SEA

CNX

25h 35m

2 stops

12:15 am - 9:00 am

CNX

SEA

23h 45m

1 stop

$977Korean Air

Thu, Oct 29 - Wed, Nov 11

1:15 am - 10:20 am

SEA

CNX

19h 05m

1 stop

11:20 am - 7:15 pm

CNX

SEA

21h 55m

1 stop

$1,029China Airlines

Sun, Sep 27 - Tue, Oct 13

1:10 am - 2:55 pm

SEA

USM

23h 45m

2 stops

10:00 am - 5:30 pm

USM

SEA

22h 30m

2 stops

$1,170EVA Air

Tue, Oct 27 - Tue, Nov 10

11:30 pm - 9:15 pm

SEA

KBV

30h 45m

2 stops

9:50 am - 6:10 pm

KBV

SEA

23h 20m

2 stops

$1,172EVA Air

Thu, Nov 5 - Mon, Nov 9

Philippine Airlines flights from Seattle to Thailand

Our best Philippine Airlines deals on Seattle to Thailand flight tickets

Philippine Airlines

Sep 20

SEA11:10 pmSeattle/Tacoma Intl

19h 45m

1 stop

BKK8:55 amBangkok Suvarnabhumi

Oct 7

BKK1:25 pmBangkok Suvarnabhumi

20h 40m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$916

Philippine Airlines

Sep 29

SEA11:10 pmSeattle/Tacoma Intl

23h 00m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

Oct 27

BKK10:50 pmBangkok Suvarnabhumi

34h 45m

1 stop

SEA7:35 pmSeattle/Tacoma Intl

$917

Philippine Airlines

Oct 9

SEA11:10 pmSeattle/Tacoma Intl

23h 00m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

Oct 13

BKK11:40 pmBangkok Suvarnabhumi

34h 25m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$918

Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets

Singapore Airlines

Oct 22

SEA10:15 amSeattle/Tacoma Intl

19h 00m

1 stop

HKT7:15 pmPhuket City

Oct 31

HKT10:05 amPhuket City

36h 05m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$680

Singapore Airlines

Oct 22

SEA10:15 amSeattle/Tacoma Intl

19h 00m

1 stop

HKT7:15 pmPhuket City

Oct 31

HKT8:15 pmPhuket City

25h 55m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$681

Singapore Airlines

Oct 10

SEA10:15 amSeattle/Tacoma Intl

19h 35m

1 stop

HKT7:50 pmPhuket City

Oct 26

HKT2:55 pmPhuket City

31h 15m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$715

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Thu 10/22

10:15 am-7:15 pm

1 stop19h 00m

Phuket City

Sat 10/31

10:05 am-8:10 am

1 stop36h 05m

$680

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Thu 10/22

10:15 am-2:10 pm

1 stop37h 55m

Phuket City

Sat 10/31

11:05 am-8:10 am

1 stop35h 05m

$681

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sat 10/10

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Mon 10/26

8:40 am-8:10 am

1 stop37h 30m

$715

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sat 10/10

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Mon 10/26

6:00 pm-8:10 am

1 stop28h 10m

$722

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/15

12:35 pm-11:35 pm

1 stop21h 00m

Bangkok Suvarnabhumi

Mon 3/1

9:30 pm-12:00 pm

1 stop29h 30m

$867

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 10/29

12:00 pm-10:55 pm

1 stop20h 55m

Chiang Mai

Wed 11/11

12:15 am-9:00 am

1 stop23h 45m

$971

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 10/29

7:20 am-10:55 pm

2 stops25h 35m

Chiang Mai

Wed 11/11

12:15 am-9:00 am

1 stop23h 45m

$977

Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 9/27

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Tue 10/13

11:20 am-7:15 pm

1 stop21h 55m

$1,029

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Tue 10/27

1:10 am-2:55 pm

2 stops23h 45m

Ko Samui

Tue 11/10

10:00 am-5:30 pm

2 stops22h 30m

$1,170

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Thu 11/5

11:30 pm-9:15 pm

2 stops30h 45m

Krabi

Mon 11/9

9:50 am-6:10 pm

2 stops23h 20m

$1,172

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 $874 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 $733 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 49% 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	17h 50m
Direct flights	None

The fastest flight from Seattle to Thailand takes 17h 50m

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 16 as of May 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 $154	Free Cancellation	Rating 7.3 995 reviews	Search Philippine Airlines flights
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,217 reviews	Search Korean Air flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,511 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,012 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.1 530 reviews	Search Asiana Airlines flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.3 1,207 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,455 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,694 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,324 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $724	Free Cancellation	Rating 8.3 822 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.