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 29% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 16 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?

Philippine Airlines, Delta, and Korean Air 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 16 as of April 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.

$353 Cheap Flights from Seattle to Thailand in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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 - 8:00 pm

SEA

BKK

19h 45m

1 stop

9:10 pm - 8:10 am

BKK

SEA

25h 00m

1 stop

$686Singapore Airlines

Thu, Oct 1 - Sat, Oct 31

10:15 am - 11:00 am

SEA

BKK

34h 45m

1 stop

8:00 pm - 8:10 am

BKK

SEA

26h 10m

1 stop

$689Singapore Airlines

Thu, Oct 1 - Sat, Oct 31

11:10 pm - 12:10 pm

SEA

BKK

23h 00m

1 stop

1:25 pm - 8:05 pm

BKK

SEA

20h 40m

1 stop

$703Philippine Airlines

Sun, Aug 30 - Wed, Sep 16

11:10 pm - 10:40 pm

SEA

BKK

33h 30m

1 stop

1:30 pm - 6:35 pm

BKK

SEA

20h 05m

1 stop

$707Philippine Airlines

Fri, Sep 11 - Thu, Dec 10

1:15 am - 4:20 pm

SEA

CNX

25h 05m

1 stop

5:20 pm - 4:10 pm

CNX

SEA

36h 50m

1 stop

$1,120STARLUX Airlines

Tue, Apr 28 - Thu, May 21

1:15 am - 4:20 pm

SEA

CNX

25h 05m

1 stop

5:20 pm - 4:10 pm

CNX

SEA

36h 50m

1 stop

$1,149STARLUX Airlines

Sun, May 3 - Tue, May 19

12:50 am - 10:25 am

SEA

CNX

19h 35m

1 stop

11:35 am - 6:50 pm

CNX

SEA

21h 15m

1 stop

$1,157EVA Air

Thu, Apr 30 - Thu, May 21

12:50 am - 10:25 am

SEA

CNX

19h 35m

1 stop

11:55 am - 7:30 pm

CNX

SEA

21h 35m

2 stops

$1,169EVA Air

Thu, Apr 30 - Wed, May 20

4:25 pm - 4:50 pm

SEA

UTP

34h 25m

2 stops

1:00 pm - 12:25 pm

UTP

SEA

37h 25m

2 stops

$1,362Qatar Airways

Thu, Sep 10 - Mon, Sep 14

4:25 pm - 4:50 pm

SEA

UTP

58h 25m

2 stops

1:00 pm - 12:25 pm

UTP

SEA

37h 25m

2 stops

$1,369Qatar Airways

Thu, Sep 10 - Mon, Sep 14

Delta flights from Seattle to Thailand

Our best Delta deals on Seattle to Thailand flight tickets

Delta

Jul 9

SEA1:05 pmSeattle/Tacoma Intl

20h 30m

1 stop

BKK11:35 pmBangkok Suvarnabhumi

Sep 9

BKK2:35 amBangkok Suvarnabhumi

25h 02m

1 stop

SEA1:37 pmSeattle/Tacoma Intl

$988

Delta

Apr 26

SEA1:00 pmSeattle/Tacoma Intl

18h 45m

1 stop

BKK9:45 pmBangkok Suvarnabhumi

May 20

BKK9:40 pmBangkok Suvarnabhumi

29h 31m

1 stop

SEA1:11 pmSeattle/Tacoma Intl

$996

Delta

Apr 27

SEA1:00 pmSeattle/Tacoma Intl

18h 45m

1 stop

BKK9:45 pmBangkok Suvarnabhumi

Jun 22

BKK9:50 amBangkok Suvarnabhumi

17h 35m

1 stop

SEA1:25 pmSeattle/Tacoma Intl

$1,008

Asiana Airlines flights from Seattle to Thailand

Our best Asiana Airlines deals on Seattle to Thailand flight tickets

Asiana Airlines

Apr 27

SEA12:55 amSeattle/Tacoma Intl

32h 25m

1 stop

BKK11:20 pmBangkok Suvarnabhumi

May 4

BKK1:20 amBangkok Suvarnabhumi

27h 35m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$905

Asiana Airlines

Apr 26

SEA12:55 amSeattle/Tacoma Intl

32h 25m

1 stop

BKK11:20 pmBangkok Suvarnabhumi

Jun 21

BKK1:20 amBangkok Suvarnabhumi

27h 35m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$915

Asiana Airlines

Apr 27

SEA12:55 amSeattle/Tacoma Intl

32h 25m

1 stop

BKK11:20 pmBangkok Suvarnabhumi

May 6

BKK1:20 amBangkok Suvarnabhumi

27h 55m

1 stop

SEA3:15 pmSeattle/Tacoma Intl

$932

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/1

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Sat 10/31

9:10 pm-8:10 am

1 stop25h 00m

$686

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/1

10:15 am-11:00 am

1 stop34h 45m

Bangkok Suvarnabhumi

Sat 10/31

8:00 pm-8:10 am

1 stop26h 10m

$689

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 8/30

11:10 pm-12:10 pm

1 stop23h 00m

Bangkok Suvarnabhumi

Wed 9/16

1:25 pm-8:05 pm

1 stop20h 40m

$703

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 9/11

11:10 pm-10:40 pm

1 stop33h 30m

Bangkok Suvarnabhumi

Thu 12/10

1:30 pm-6:35 pm

1 stop20h 05m

$707

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 4/28

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Thu 5/21

5:20 pm-4:10 pm

1 stop36h 50m

$1,120

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 5/3

1:15 am-4:20 pm

1 stop25h 05m

Chiang Mai

Tue 5/19

5:20 pm-4:10 pm

1 stop36h 50m

$1,149

Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 4/30

12:50 am-10:25 am

1 stop19h 35m

Chiang Mai

Thu 5/21

11:35 am-6:50 pm

1 stop21h 15m

$1,157

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Thu 4/30

12:50 am-10:25 am

1 stop19h 35m

Chiang Mai

Wed 5/20

11:55 am-7:30 pm

2 stops21h 35m

$1,169

SeattleRayong

SEA - UTP

SEAUTP

Seattle/Tacoma Intl

Thu 9/10

4:25 pm-4:50 pm

2 stops34h 25m

Utapao Rayong Pattaya

Mon 9/14

1:00 pm-12:25 pm

2 stops37h 25m

$1,362

SeattleRayong

SEA - UTP

SEAUTP

Seattle/Tacoma Intl

Thu 9/10

4:25 pm-4:50 pm

2 stops58h 25m

Utapao Rayong Pattaya

Mon 9/14

1:00 pm-12:25 pm

2 stops37h 25m

$1,369

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 $739. If you are unable to visit Thailand during the month of September, then departing from Seattle during the month October is also very affordable. Most momondo users find prices during this month for around $742.

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 $869 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 $733 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	17h 50m
Direct flights	None

The fastest flight from Seattle to Thailand takes 17h 50m

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 16 as of April 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 7.3 990 reviews	Search Philippine Airlines flights
Korean Air	PriceFrom $418	Free Cancellation	Rating 8.4 1,212 reviews	Search Korean Air flights
Singapore Airlines	PriceFrom $510	Free Cancellation	Rating 8.2 1,499 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 10,939 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.0 518 reviews	Search Asiana Airlines flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.4 1,179 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,420 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,604 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $704	Free Cancellation	Rating 7.6 1,280 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $712	Free Cancellation	Rating 8.3 817 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.