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 Asiana 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 August 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.

$388 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 - 2:10 pm

SEA

HKT

37h 55m

1 stop

10:05 am - 8:10 am

HKT

SEA

36h 05m

1 stop

$695Singapore Airlines

Tue, Oct 20 - Fri, Oct 30

10:15 am - 2:10 pm

SEA

HKT

37h 55m

1 stop

10:05 am - 8:10 am

HKT

SEA

36h 05m

1 stop

$695Singapore Airlines

Tue, Oct 20 - Fri, Oct 30

10:40 am - 5:05 am

SEA

BKK

28h 25m

1 stop

7:05 am - 10:47 pm

BKK

SEA

29h 42m

1 stop

$770Air Canada

Mon, Sep 7 - Mon, Sep 21

10:40 am - 5:05 am

SEA

BKK

28h 25m

1 stop

7:05 am - 10:47 pm

BKK

SEA

29h 42m

1 stop

$780Air Canada

Mon, Sep 7 - Mon, Sep 21

10:30 am - 11:00 pm

SEA

BKK

22h 30m

2 stops

2:35 am - 7:10 pm

BKK

SEA

30h 35m

1 stop

$805Multiple Airlines

Mon, Sep 7 - Mon, Oct 26

1:55 am - 9:45 am

SEA

BKK

17h 50m

1 stop

5:30 pm - 7:45 pm

BKK

SEA

16h 15m

1 stop

$806China Airlines

Sun, Sep 6 - Mon, Sep 14

12:10 am - 9:50 am

SEA

BKK

18h 40m

1 stop

2:35 am - 6:10 pm

BKK

SEA

30h 35m

1 stop

$806China Airlines

Sat, Nov 28 - Sat, Dec 26

11:00 am - 11:00 pm

SEA

BKK

22h 00m

1 stop

12:25 am - 9:00 am

BKK

SEA

22h 35m

1 stop

$809Hainan Airlines

Tue, Sep 1 - Mon, Sep 14

11:00 am - 11:00 pm

SEA

BKK

22h 00m

1 stop

12:25 am - 9:00 am

BKK

SEA

22h 35m

1 stop

$809Hainan Airlines

Tue, Sep 15 - Mon, Sep 28

7:00 am - 11:00 pm

SEA

BKK

26h 00m

2 stops

7:35 am - 7:30 pm

BKK

SEA

25h 55m

1 stop

$809Multiple Airlines

Tue, Sep 8 - Mon, Oct 26

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Hainan Airlines flights from Seattle to Thailand

Our best Hainan Airlines deals on Seattle to Thailand flight tickets

Hainan Airlines

Sep 15

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

Sep 28

BKK12:25 amBangkok Suvarnabhumi

22h 35m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$822

Hainan Airlines

Aug 4

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

Aug 28

BKK12:25 amBangkok Suvarnabhumi

22h 35m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$879

Air Canada flights from Seattle to Thailand

Our best Air Canada deals on Seattle to Thailand flight tickets

Air Canada

Sep 7

SEA10:40 amSeattle/Tacoma Intl

28h 25m

1 stop

BKK5:05 amBangkok Suvarnabhumi

Sep 21

BKK7:05 amBangkok Suvarnabhumi

29h 42m

1 stop

SEA10:47 pmSeattle/Tacoma Intl

$770

Air Canada

Sep 7

SEA10:40 amSeattle/Tacoma Intl

22h 55m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 21

BKK7:05 amBangkok Suvarnabhumi

25h 27m

1 stop

SEA6:32 pmSeattle/Tacoma Intl

$780

Air Canada

Sep 7

SEA10:40 amSeattle/Tacoma Intl

22h 55m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 21

BKK7:05 amBangkok Suvarnabhumi

25h 27m

1 stop

SEA6:32 pmSeattle/Tacoma Intl

$782

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/20

10:15 am-2:10 pm

1 stop37h 55m

Phuket City

Fri 10/30

10:05 am-8:10 am

1 stop36h 05m

$695

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 10/20

10:15 am-2:10 pm

1 stop37h 55m

Phuket City

Fri 10/30

10:05 am-8:10 am

1 stop36h 05m

$695

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/7

10:40 am-5:05 am

1 stop28h 25m

Bangkok Suvarnabhumi

Mon 9/21

7:05 am-10:47 pm

1 stop29h 42m

$770

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/7

10:40 am-5:05 am

1 stop28h 25m

Bangkok Suvarnabhumi

Mon 9/21

7:05 am-10:47 pm

1 stop29h 42m

$780

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/7

10:30 am-11:00 pm

2 stops22h 30m

Bangkok Suvarnabhumi

Mon 10/26

2:35 am-7:10 pm

1 stop30h 35m

$805

Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 9/6

1:55 am-9:45 am

1 stop17h 50m

Bangkok Suvarnabhumi

Mon 9/14

5:30 pm-7:45 pm

1 stop16h 15m

$806

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 11/28

12:10 am-9:50 am

1 stop18h 40m

Bangkok Suvarnabhumi

Sat 12/26

2:35 am-6:10 pm

1 stop30h 35m

$806

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/1

11:00 am-11:00 pm

1 stop22h 00m

Bangkok Suvarnabhumi

Mon 9/14

12:25 am-9:00 am

1 stop22h 35m

$809

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/15

11:00 am-11:00 pm

1 stop22h 00m

Bangkok Suvarnabhumi

Mon 9/28

12:25 am-9:00 am

1 stop22h 35m

$809

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/8

7:00 am-11:00 pm

2 stops26h 00m

Bangkok Suvarnabhumi

Mon 10/26

7:35 am-7:30 pm

1 stop25h 55m

$809

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 March is, on average, the cheapest month to fly to Thailand from Seattle, with most prices found around $750. If you are unable to visit Thailand during the month of March, then departing from Seattle during the month October is also very affordable. Most momondo users find prices during this month for around $766.

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 $886 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 $777 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 45m
Direct flights	None

The fastest flight from Seattle to Thailand takes 18h 45m

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 August 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 1,012 reviews	Search Philippine Airlines flights
Hainan Airlines	PriceFrom $385	Free Cancellation	Rating 8.3 68 reviews	Search Hainan Airlines flights
Delta	PriceFrom $459	Free Cancellation	Rating 7.8 8,498 reviews	Search Delta flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,584 reviews	Search Singapore Airlines flights
Asiana Airlines	PriceFrom $623	Free Cancellation	Rating 8.1 555 reviews	Search Asiana Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 11,415 reviews	Search Air Canada flights
Korean Air	PriceFrom $652	Free Cancellation	Rating 8.4 1,223 reviews	Search Korean Air flights
ANA	PriceFrom $685	Free Cancellation	Rating 8.3 1,288 reviews	Search ANA flights
United Airlines	PriceFrom $702	Free Cancellation	Rating 7.4 10,063 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,436 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.