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 32% 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, Asiana Airlines, and Hainan 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 January 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.

$278 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.

12:10 am - 10:00 pm

SEA

BKK

30h 50m1 stop

12:20 pm - 2:55 pm

BKK

SEA

16h 35m1 stop

$642Asiana Airlines

Wed, Jan 21 - Sat, Mar 14

8:45 am - 2:35 pm

SEA

BKK

38h 50m1 stop

8:10 pm - 8:45 am

BKK

SEA

26h 35m1 stop

$643Singapore Airlines

Sun, Mar 1 - Fri, Apr 17

1:15 am - 10:20 am

SEA

CNX

19h 05m1 stop

11:20 am - 7:15 pm

CNX

SEA

21h 55m1 stop

$762China Airlines

Tue, Apr 28 - Mon, May 11

1:30 am - 10:25 am

SEA

CNX

18h 55m1 stop

11:35 am - 7:30 pm

CNX

SEA

21h 55m1 stop

$776EVA Air

Sun, Apr 19 - Thu, Apr 30

12:10 am - 10:35 am

SEA

CNX

19h 25m1 stop

11:50 am - 7:10 pm

CNX

SEA

21h 20m1 stop

$781EVA Air

Sun, Mar 1 - Thu, Mar 19

1:15 am - 10:20 am

SEA

CNX

19h 05m1 stop

11:20 am - 7:15 pm

CNX

SEA

21h 55m1 stop

$792China Airlines

Sun, Apr 12 - Mon, Apr 20

11:00 am - 10:55 pm

SEA

CNX

20h 55m1 stop

12:15 am - 9:00 am

CNX

SEA

23h 45m1 stop

$800Korean Air

Tue, Jan 27 - Mon, Feb 2

7:15 am - 10:55 pm

SEA

CNX

24h 40m2 stops

12:15 am - 9:00 am

CNX

SEA

23h 45m1 stop

$806Korean Air

Tue, Jan 27 - Mon, Feb 2

8:25 am - 4:50 pm

SEA

UTP

41h 25m3 stops

1:00 pm - 4:42 pm

UTP

SEA

42h 42m3 stops

$3,213Qatar Airways

Sun, Feb 1 - Tue, Feb 10

10:44 am - 4:50 pm

SEA

UTP

39h 06m3 stops

1:00 pm - 6:57 pm

UTP

SEA

44h 57m3 stops

$3,511Qatar Airways

Sat, Feb 14 - Sun, Feb 22

Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets

Singapore Airlines

Mar 1

SEA8:45 amSeattle/Tacoma Intl

38h 50m

1 stop

BKK2:35 pmBangkok Suvarnabhumi

Apr 17

BKK8:10 pmBangkok Suvarnabhumi

26h 35m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$643

Singapore Airlines

Mar 14

SEA9:45 amSeattle/Tacoma Intl

20h 15m

1 stop

BKK8:00 pmBangkok Suvarnabhumi

Apr 6

BKK12:15 pmBangkok Suvarnabhumi

34h 30m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$646

Singapore Airlines

Apr 10

SEA10:15 amSeattle/Tacoma Intl

38h 05m

1 stop

BKK2:20 pmBangkok Suvarnabhumi

Apr 20

BKK9:20 amBangkok Suvarnabhumi

37h 25m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$650

Asiana Airlines flights from Seattle to Thailand

Our best Asiana Airlines deals on Seattle to Thailand flight tickets

Asiana Airlines

Jan 21

SEA12:10 amSeattle/Tacoma Intl

30h 50m

1 stop

BKK10:00 pmBangkok Suvarnabhumi

Mar 14

BKK12:20 pmBangkok Suvarnabhumi

16h 35m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$642

Asiana Airlines

Jan 31

SEA12:10 amSeattle/Tacoma Intl

30h 50m

1 stop

BKK10:00 pmBangkok Suvarnabhumi

Apr 17

BKK12:20 pmBangkok Suvarnabhumi

16h 35m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$651

Asiana Airlines

Jan 31

SEA12:10 amSeattle/Tacoma Intl

30h 50m

1 stop

BKK10:00 pmBangkok Suvarnabhumi

Feb 10

BKK11:55 pmBangkok Suvarnabhumi

29h 00m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$656

Fly from

Fly to

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 1/21

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Sat 3/14

12:20 pm-2:55 pm

1 stop16h 35m

$642

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/1

8:45 am-2:35 pm

1 stop38h 50m

Bangkok Suvarnabhumi

Fri 4/17

8:10 pm-8:45 am

1 stop26h 35m

$643

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 4/28

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Mon 5/11

11:20 am-7:15 pm

1 stop21h 55m

$762

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 4/19

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Thu 4/30

11:35 am-7:30 pm

1 stop21h 55m

$776

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 3/1

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Thu 3/19

11:50 am-7:10 pm

1 stop21h 20m

$781

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 4/12

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Mon 4/20

11:20 am-7:15 pm

1 stop21h 55m

$792

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 1/27

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Mon 2/2

12:15 am-9:00 am

1 stop23h 45m

$800

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 1/27

7:15 am-10:55 pm

2 stops24h 40m

Chiang Mai

Mon 2/2

12:15 am-9:00 am

1 stop23h 45m

$806

SeattleRayong

SEA - UTP

SEAUTP

Seattle/Tacoma Intl

Sun 2/1

8:25 am-4:50 pm

3 stops41h 25m

Utapao Rayong Pattaya

Tue 2/10

1:00 pm-4:42 pm

3 stops42h 42m

$3,213

SeattleRayong

SEA - UTP

SEAUTP

Seattle/Tacoma Intl

Sat 2/14

10:44 am-4:50 pm

3 stops39h 06m

Utapao Rayong Pattaya

Sun 2/22

1:00 pm-6:57 pm

3 stops44h 57m

$3,511

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 $764.

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 $891 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 $741 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 56% 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 January 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 $174	Free Cancellation	Rating 7.3 949 reviews	Search Philippine Airlines flights
Delta	PriceFrom $433	Free Cancellation	Rating 7.9 8,025 reviews	Search Delta flights
Singapore Airlines	PriceFrom $517	Free Cancellation	Rating 8.1 1,429 reviews	Search Singapore Airlines flights
Asiana Airlines	PriceFrom $612	Free Cancellation	Rating 8.2 500 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $673	Free Cancellation	Rating 8.4 1,188 reviews	Search Korean Air flights
ANA	PriceFrom $684	Free Cancellation	Rating 8.4 1,060 reviews	Search ANA flights
United Airlines	PriceFrom $700	Free Cancellation	Rating 7.4 9,139 reviews	Search United Airlines flights
China Airlines	PriceFrom $730	Free Cancellation	Rating 8.3 798 reviews	Search China Airlines flights
Cathay Pacific	PriceFrom $735	Free Cancellation	Rating 7.6 1,124 reviews	Search Cathay Pacific flights
STARLUX Airlines	PriceFrom $740	Free Cancellation	Rating 8.9 256 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.