What airlines fly to Thailand?

Asiana Airlines, Singapore Airlines and EVA Air 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 28% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 18 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, Korean Air, 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 18 as of July 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.

$397 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

6:00 pm - 8:45 am

HKT

SEA

28h 45m

1 stop

$670Singapore Airlines

Tue, Oct 13 - Fri, Oct 23

10:15 am - 7:50 pm

SEA

HKT

19h 35m

1 stop

10:05 am - 8:10 am

HKT

SEA

36h 05m

1 stop

$672Singapore Airlines

Tue, Oct 20 - Fri, Oct 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

$674Singapore Airlines

Tue, Oct 20 - Fri, Oct 30

10:15 am - 2:10 pm

SEA

HKT

37h 55m

1 stop

8:40 am - 8:10 am

HKT

SEA

37h 30m

1 stop

$680Singapore Airlines

Thu, Oct 22 - Sat, Oct 31

11:00 am - 10:55 pm

SEA

CNX

20h 55m

1 stop

12:15 am - 9:00 am

CNX

SEA

23h 45m

1 stop

$868Korean Air

Tue, Jan 12 - Sun, Jan 24

11:00 am - 10:55 pm

SEA

CNX

20h 55m

1 stop

12:15 am - 9:00 am

CNX

SEA

23h 45m

1 stop

$869Korean Air

Wed, Nov 4 - Sat, Nov 7

1:20 pm - 8:00 pm

SEA

KBV

40h 40m

2 stops

4:30 pm - 10:40 am

KBV

SEA

32h 10m

2 stops

$970Multiple Airlines

Sat, Aug 29 - Sat, Sep 5

11:45 pm - 9:15 pm

SEA

KBV

30h 30m

2 stops

9:50 am - 3:05 pm

KBV

SEA

20h 15m

2 stops

$1,013Multiple Airlines

Mon, Nov 2 - Mon, Nov 16

4:25 pm - 4:50 pm

SEA

UTP

34h 25m

2 stops

1:00 pm - 12:45 pm

UTP

SEA

37h 45m

2 stops

$1,421Qatar Airways

Fri, Sep 25 - Tue, Sep 29

10:40 am - 4:50 pm

SEA

UTP

40h 10m

3 stops

1:00 pm - 7:39 pm

UTP

SEA

44h 39m

3 stops

$1,583Qatar Airways

Thu, Sep 3 - Sat, Sep 12

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Delta flights from Seattle to Thailand

Our best Delta deals on Seattle to Thailand flight tickets

Delta

Jul 20

SEA1:05 pmSeattle/Tacoma Intl

22h 00m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Aug 6

BKK9:50 amBangkok Suvarnabhumi

17h 47m

1 stop

SEA1:37 pmSeattle/Tacoma Intl

$865

Delta

Jul 19

SEA1:05 pmSeattle/Tacoma Intl

22h 00m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Aug 5

BKK2:35 amBangkok Suvarnabhumi

25h 02m

1 stop

SEA1:37 pmSeattle/Tacoma Intl

$866

Delta

Jul 20

SEA1:05 pmSeattle/Tacoma Intl

22h 00m

1 stop

BKK1:05 amBangkok Suvarnabhumi

Aug 20

BKK9:40 pmBangkok Suvarnabhumi

29h 57m

1 stop

SEA1:37 pmSeattle/Tacoma Intl

$905

ANA flights from Seattle to Thailand

Our best ANA deals on Seattle to Thailand flight tickets

ANA

Jul 20

SEA4:30 pmSeattle/Tacoma Intl

33h 00m

1 stop

BKK3:30 pmBangkok Suvarnabhumi

Aug 6

BKK9:35 amBangkok Suvarnabhumi

22h 57m

2 stops

SEA6:32 pmSeattle/Tacoma Intl

$868

ANA

Jul 20

SEA4:30 pmSeattle/Tacoma Intl

22h 05m

1 stop

BKK4:35 amBangkok Suvarnabhumi

Aug 20

BKK9:35 amBangkok Suvarnabhumi

22h 57m

2 stops

SEA6:32 pmSeattle/Tacoma Intl

$869

ANA

Jul 21

SEA4:30 pmSeattle/Tacoma Intl

22h 05m

1 stop

BKK4:35 amBangkok Suvarnabhumi

Aug 6

BKK9:35 amBangkok Suvarnabhumi

22h 57m

2 stops

SEA6:32 pmSeattle/Tacoma Intl

$894

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

Fri 10/23

6:00 pm-8:45 am

1 stop28h 45m

$670

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/20

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Fri 10/30

10:05 am-8:10 am

1 stop36h 05m

$672

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/20

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Fri 10/30

10:05 am-8:10 am

1 stop36h 05m

$674

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

8:40 am-8:10 am

1 stop37h 30m

$680

Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 1/12

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sun 1/24

12:15 am-9:00 am

1 stop23h 45m

$868

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Wed 11/4

11:00 am-10:55 pm

1 stop20h 55m

Chiang Mai

Sat 11/7

12:15 am-9:00 am

1 stop23h 45m

$869

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Sat 8/29

1:20 pm-8:00 pm

2 stops40h 40m

Krabi

Sat 9/5

4:30 pm-10:40 am

2 stops32h 10m

$970

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Mon 11/2

11:45 pm-9:15 pm

2 stops30h 30m

Krabi

Mon 11/16

9:50 am-3:05 pm

2 stops20h 15m

$1,013

SeattleRayong

SEA - UTP

SEAUTP

Seattle/Tacoma Intl

Fri 9/25

4:25 pm-4:50 pm

2 stops34h 25m

Utapao Rayong Pattaya

Tue 9/29

1:00 pm-12:45 pm

2 stops37h 45m

$1,421

SeattleRayong

SEA - UTP

SEAUTP

Seattle/Tacoma Intl

Thu 9/3

10:40 am-4:50 pm

3 stops40h 10m

Utapao Rayong Pattaya

Sat 9/12

1:00 pm-7:39 pm

3 stops44h 39m

$1,583

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 April is, on average, the cheapest month to fly to Thailand from Seattle, with most prices found around $140. If you are unable to visit Thailand during the month of April, then departing from Seattle during the month July is also very affordable. Most momondo users find prices during this month for around $425.

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 $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 $776 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 16% 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 18 as of July 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 1,011 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 67 reviews	Search Hainan Airlines flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,472 reviews	Search Delta flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,573 reviews	Search Singapore Airlines flights
Asiana Airlines	PriceFrom $623	Free Cancellation	Rating 8.1 554 reviews	Search Asiana Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,347 reviews	Search Air Canada flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
ANA	PriceFrom $681	Free Cancellation	Rating 8.3 1,271 reviews	Search ANA flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,996 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,415 reviews	Search Cathay Pacific 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.