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 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, Singapore Airlines, and Delta 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.

$379 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 - 7:50 pm

SEA

HKT

19h 35m

1 stop

11:40 am - 8:10 am

HKT

SEA

34h 30m

1 stop

$660Singapore Airlines

Tue, Oct 13 - Sat, Oct 24

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

8:40 am - 8:10 am

HKT

SEA

37h 30m

1 stop

$662Singapore Airlines

Tue, Oct 20 - Sat, Oct 31

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

6:00 pm - 8:45 am

HKT

SEA

28h 45m

1 stop

$663Singapore Airlines

Tue, Oct 13 - Fri, Oct 23

10:15 am - 7:15 pm

SEA

HKT

19h 00m

1 stop

11:05 am - 8:10 am

HKT

SEA

35h 05m

1 stop

$669Singapore Airlines

Thu, Oct 22 - Sat, Oct 31

1:05 pm - 1:05 am

SEA

BKK

22h 00m

1 stop

11:30 pm - 1:37 pm

BKK

SEA

28h 07m

1 stop

$969Delta

Tue, Aug 18 - Tue, Sep 8

11:00 am - 11:20 pm

SEA

BKK

21h 20m

1 stop

12:55 am - 9:00 am

BKK

SEA

23h 05m

1 stop

$972Korean Air

Tue, Dec 1 - Wed, Dec 16

1:20 pm - 1:05 am

SEA

BKK

21h 45m

1 stop

2:35 am - 10:40 am

BKK

SEA

22h 05m

1 stop

$973Korean Air

Wed, Aug 5 - Wed, Sep 9

10:55 am - 9:35 am

SEA

BKK

32h 40m

3 stops

9:35 am - 2:25 pm

BKK

SEA

18h 50m

1 stop

$982United Airlines

Mon, Aug 31 - Mon, Sep 7

1:30 am - 8:45 am

SEA

KBV

41h 15m

2 stops

9:25 am - 7:20 pm

KBV

SEA

23h 55m

2 stops

$1,172EVA Air

Sun, Oct 18 - Thu, Oct 22

1:10 am - 4:25 pm

SEA

USM

25h 15m

2 stops

2:05 pm - 6:10 pm

USM

SEA

19h 05m

2 stops

$1,241EVA Air

Wed, Oct 28 - Mon, Nov 2

Delta flights from Seattle to Thailand

Our best Delta deals on Seattle to Thailand flight tickets

Delta

Aug 18

SEA1:05 pmSeattle/Tacoma Intl

22h 00m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Sep 8

BKK11:30 pmBangkok Suvarnabhumi

28h 07m

1 stop

SEA1:37 pmSeattle/Tacoma Intl

$969

Delta

Oct 11

SEA1:00 pmSeattle/Tacoma Intl

22h 05m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Oct 29

BKK9:40 amBangkok Suvarnabhumi

17h 11m

1 stop

SEA12:51 pmSeattle/Tacoma Intl

$1,019

Delta

Oct 23

SEA1:00 pmSeattle/Tacoma Intl

18h 45m

1 stop

BKK9:45 pmBangkok Suvarnabhumi

Nov 18

BKK11:15 pmBangkok Suvarnabhumi

27h 36m

1 stop

SEA11:51 amSeattle/Tacoma Intl

$1,022

Korean Air flights from Seattle to Thailand

Our best Korean Air deals on Seattle to Thailand flight tickets

Korean Air

Dec 1

SEA11:00 amSeattle/Tacoma Intl

21h 20m

1 stop

BKK11:20 pmBangkok Suvarnabhumi

Dec 16

BKK12:55 amBangkok Suvarnabhumi

23h 05m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$972

Korean Air

Aug 5

SEA1:20 pmSeattle/Tacoma Intl

21h 45m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Sep 9

BKK2:35 amBangkok Suvarnabhumi

22h 05m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$973

Korean Air

Sep 7

SEA7:20 amSeattle/Tacoma Intl

26h 15m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 21

BKK2:35 amBangkok Suvarnabhumi

22h 05m

1 stop

SEA10:40 amSeattle/Tacoma Intl

$978

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/13

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Sat 10/24

11:40 am-8:10 am

1 stop34h 30m

$660

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/20

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Sat 10/31

8:40 am-8:10 am

1 stop37h 30m

$662

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/13

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Fri 10/23

6:00 pm-8:45 am

1 stop28h 45m

$663

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

11:05 am-8:10 am

1 stop35h 05m

$669

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/18

1:05 pm-1:05 am

1 stop22h 00m

Bangkok Suvarnabhumi

Tue 9/8

11:30 pm-1:37 pm

1 stop28h 07m

$969

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 12/1

11:00 am-11:20 pm

1 stop21h 20m

Bangkok Suvarnabhumi

Wed 12/16

12:55 am-9:00 am

1 stop23h 05m

$972

Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 8/5

1:20 pm-1:05 am

1 stop21h 45m

Bangkok Suvarnabhumi

Wed 9/9

2:35 am-10:40 am

1 stop22h 05m

$973

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 8/31

10:55 am-9:35 am

3 stops32h 40m

Bangkok Suvarnabhumi

Mon 9/7

9:35 am-2:25 pm

1 stop18h 50m

$982

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Sun 10/18

1:30 am-8:45 am

2 stops41h 15m

Krabi

Thu 10/22

9:25 am-7:20 pm

2 stops23h 55m

$1,172

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Wed 10/28

1:10 am-4:25 pm

2 stops25h 15m

Ko Samui

Mon 11/2

2:05 pm-6:10 pm

2 stops19h 05m

$1,241

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 $870 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 $730 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 46% 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 25m
Direct flights	None

The fastest flight from Seattle to Thailand takes 18h 25m

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 1,530 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,126 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $625	Free Cancellation	Rating 8.1 539 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,217 reviews	Search Korean Air flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.3 1,220 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.8 8,395 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,773 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,357 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.