What airlines fly to Thailand?

EVA Air, Asiana Airlines and China Airlines are the top three most popular airlines that fly to Thailand from Seattle according to our data. EVA Air is the first choice among our users, with 31% 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?

Singapore Airlines, Philippine Airlines, and China 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 February 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.

$272 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

11:40 am - 8:45 am

HKT

SEA

35h 05m

1 stop

$499Singapore Airlines

Tue, Apr 14 - Fri, Apr 24

10:15 am - 7:15 pm

SEA

HKT

19h 00m

1 stop

9:55 am - 8:45 am

HKT

SEA

36h 50m

1 stop

$500Singapore Airlines

Tue, Apr 14 - Fri, Apr 24

12:55 am - 11:20 pm

SEA

BKK

32h 25m

1 stop

1:20 am - 2:55 pm

BKK

SEA

27h 35m

1 stop

$648Asiana Airlines

Sun, Apr 26 - Mon, May 11

12:55 am - 10:40 am

SEA

BKK

19h 45m

1 stop

1:20 am - 2:55 pm

BKK

SEA

27h 35m

1 stop

$649Asiana Airlines

Thu, Apr 23 - Sat, May 2

11:45 am - 10:50 am

SEA

HKT

33h 05m

1 stop

11:50 am - 10:05 am

HKT

SEA

36h 15m

1 stop

$704Cathay Pacific

Wed, Apr 15 - Tue, Apr 21

11:45 am - 10:50 am

SEA

HKT

33h 05m

1 stop

11:50 am - 10:05 am

HKT

SEA

36h 15m

1 stop

$709Cathay Pacific

Mon, Apr 20 - Tue, Apr 28

12:10 am - 10:25 am

SEA

CNX

19h 15m

1 stop

11:25 am - 7:10 pm

CNX

SEA

21h 45m

1 stop

$744China Airlines

Mon, Mar 2 - Thu, Mar 12

1:15 am - 10:20 am

SEA

CNX

19h 05m

1 stop

11:20 am - 7:15 pm

CNX

SEA

21h 55m

1 stop

$749China Airlines

Sat, Apr 25 - Tue, May 5

11:30 pm - 9:15 pm

SEA

KBV

30h 45m

2 stops

9:50 am - 6:30 pm

KBV

SEA

22h 40m

2 stops

$871EVA Air

Thu, Mar 5 - Thu, Mar 12

12:10 am - 9:05 am

SEA

KBV

41h 55m

2 stops

9:25 am - 7:30 pm

KBV

SEA

48h 05m

2 stops

$921EVA Air

Sat, Feb 28 - Wed, Apr 15

Cathay Pacific flights from Seattle to Thailand

Our best Cathay Pacific deals on Seattle to Thailand flight tickets

Cathay Pacific

Apr 28

SEA11:45 amSeattle/Tacoma Intl

36h 15m

1 stop

BKK2:00 pmBangkok Suvarnabhumi

May 5

BKK7:35 amBangkok Suvarnabhumi

16h 30m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$702

Cathay Pacific

Apr 27

SEA11:45 amSeattle/Tacoma Intl

33h 20m

1 stop

BKK11:05 amBangkok Suvarnabhumi

May 7

BKK7:35 amBangkok Suvarnabhumi

16h 30m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$703

Cathay Pacific

Apr 6

SEA11:45 amSeattle/Tacoma Intl

22h 25m

1 stop

BKK12:10 amBangkok Suvarnabhumi

Apr 15

BKK12:10 pmBangkok Suvarnabhumi

35h 55m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$704

Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets

Singapore Airlines

Apr 14

SEA10:15 amSeattle/Tacoma Intl

19h 00m

1 stop

HKT7:15 pmPhuket City

Apr 24

HKT11:40 amPhuket City

35h 05m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$499

Singapore Airlines

Apr 14

SEA10:15 amSeattle/Tacoma Intl

19h 00m

1 stop

HKT7:15 pmPhuket City

Apr 24

HKT9:55 amPhuket City

36h 50m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$500

Singapore Airlines

Apr 14

SEA10:15 amSeattle/Tacoma Intl

19h 00m

1 stop

HKT7:15 pmPhuket City

Apr 24

HKT8:10 pmPhuket City

26h 35m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$509

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 4/14

10:15 am-7:15 pm

1 stop19h 00m

Phuket City

Fri 4/24

11:40 am-8:45 am

1 stop35h 05m

$499

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 4/14

10:15 am-7:15 pm

1 stop19h 00m

Phuket City

Fri 4/24

9:55 am-8:45 am

1 stop36h 50m

$500

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/26

12:55 am-11:20 pm

1 stop32h 25m

Bangkok Suvarnabhumi

Mon 5/11

1:20 am-2:55 pm

1 stop27h 35m

$648

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 4/23

12:55 am-10:40 am

1 stop19h 45m

Bangkok Suvarnabhumi

Sat 5/2

1:20 am-2:55 pm

1 stop27h 35m

$649

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Wed 4/15

11:45 am-10:50 am

1 stop33h 05m

Phuket City

Tue 4/21

11:50 am-10:05 am

1 stop36h 15m

$704

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Mon 4/20

11:45 am-10:50 am

1 stop33h 05m

Phuket City

Tue 4/28

11:50 am-10:05 am

1 stop36h 15m

$709

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 3/2

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Thu 3/12

11:25 am-7:10 pm

1 stop21h 45m

$744

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sat 4/25

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Tue 5/5

11:20 am-7:15 pm

1 stop21h 55m

$749

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Thu 3/5

11:30 pm-9:15 pm

2 stops30h 45m

Krabi

Thu 3/12

9:50 am-6:30 pm

2 stops22h 40m

$871

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Sat 2/28

12:10 am-9:05 am

2 stops41h 55m

Krabi

Wed 4/15

9:25 am-7:30 pm

2 stops48h 05m

$921

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 $749. If you are unable to visit Thailand during the month of September, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $767.

How far in advance should I book a flight 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 $879 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 $719 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 60% 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

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 February 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 7.3 954 reviews	Search Philippine Airlines flights
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,191 reviews	Search Korean Air flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,452 reviews	Search Singapore Airlines flights
Delta	PriceFrom $544	Free Cancellation	Rating 7.9 8,179 reviews	Search Delta flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.1 505 reviews	Search Asiana Airlines flights
ANA	PriceFrom $683	Free Cancellation	Rating 8.4 1,090 reviews	Search ANA flights
United Airlines	PriceFrom $700	Free Cancellation	Rating 7.4 9,276 reviews	Search United Airlines flights
China Airlines	PriceFrom $730	Free Cancellation	Rating 8.3 804 reviews	Search China Airlines flights
Cathay Pacific	PriceFrom $735	Free Cancellation	Rating 7.6 1,161 reviews	Search Cathay Pacific flights
STARLUX Airlines	PriceFrom $740	Free Cancellation	Rating 8.9 273 reviews	Search STARLUX 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.