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?

Singapore Airlines, Delta, 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 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.

$385 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 - 7:50 pm

SEA

HKT

19h 35m

1 stop

9:25 am - 8:45 am

HKT

SEA

37h 20m

1 stop

$676Singapore 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

$714Singapore Airlines

Sat, Oct 10 - Mon, Oct 26

10:15 am - 11:55 am

SEA

HKT

35h 40m

1 stop

6:00 pm - 8:10 am

HKT

SEA

28h 10m

1 stop

$720Singapore Airlines

Sat, Oct 10 - Mon, Oct 26

1:55 am - 10:20 am

SEA

CNX

18h 25m

1 stop

11:20 am - 7:45 pm

CNX

SEA

22h 25m

1 stop

$1,051China Airlines

Mon, Aug 31 - Thu, Sep 10

1:55 am - 10:20 am

SEA

CNX

18h 25m

1 stop

11:20 am - 7:45 pm

CNX

SEA

22h 25m

1 stop

$1,081China Airlines

Sun, Aug 30 - Thu, Sep 10

2:10 am - 10:25 am

SEA

CNX

18h 15m

1 stop

11:35 am - 7:40 pm

CNX

SEA

22h 05m

1 stop

$1,100EVA Air

Sun, Aug 30 - Wed, Sep 9

1:30 am - 8:45 am

SEA

KBV

41h 15m

2 stops

9:25 am - 7:20 pm

KBV

SEA

47h 55m

2 stops

$1,139EVA Air

Wed, Sep 16 - Wed, Sep 30

1:15 pm - 8:35 am

SEA

USM

29h 20m

2 stops

7:50 am - 10:35 am

USM

SEA

40h 45m

2 stops

$1,205Japan Airlines

Sun, Sep 6 - Fri, Sep 18

5:05 pm - 4:55 pm

SEA

USM

33h 50m

2 stops

2:30 pm - 2:45 pm

USM

SEA

38h 15m

2 stops

$1,350Qatar Airways

Mon, May 11 - Sun, May 24

4:25 pm - 4:50 pm

SEA

UTP

34h 25m

2 stops

1:00 pm - 12:25 pm

UTP

SEA

37h 25m

2 stops

$1,382Qatar Airways

Thu, Sep 10 - Mon, Sep 14

Hainan Airlines flights from Seattle to Thailand

Our best Hainan Airlines deals on Seattle to Thailand flight tickets

Hainan Airlines

Sep 19

SEA11:00 amSeattle/Tacoma Intl

35h 20m

1 stop

BKK12:20 pmBangkok Suvarnabhumi

Oct 19

BKK1:50 pmBangkok Suvarnabhumi

33h 10m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$860

Hainan Airlines

Oct 20

SEA11:00 amSeattle/Tacoma Intl

35h 20m

1 stop

BKK12:20 pmBangkok Suvarnabhumi

Nov 6

BKK4:20 pmBangkok Suvarnabhumi

30h 40m

1 stop

SEA8:00 amSeattle/Tacoma Intl

$910

Hainan Airlines

Sep 1

SEA11:00 amSeattle/Tacoma Intl

22h 00m

1 stop

BKK11:00 pmBangkok Suvarnabhumi

Sep 4

BKK12:40 amBangkok Suvarnabhumi

22h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$917

SAUDIA flights from Seattle to Thailand

Our best SAUDIA deals on Seattle to Thailand flight tickets

SAUDIA

May 4

SEA10:40 pmSeattle/Tacoma Intl

49h 05m

2 stops

BKK1:45 pmBangkok Suvarnabhumi

May 11

BKK1:50 amBangkok Suvarnabhumi

34h 55m

2 stops

SEA10:45 pmSeattle/Tacoma Intl

$892

SAUDIA

Sep 21

SEA9:55 pmSeattle/Tacoma Intl

49h 50m

2 stops

BKK1:45 pmBangkok Suvarnabhumi

Oct 19

BKK1:50 amBangkok Suvarnabhumi

34h 22m

2 stops

SEA10:12 pmSeattle/Tacoma Intl

$904

SAUDIA

May 1

SEA10:40 pmSeattle/Tacoma Intl

49h 00m

2 stops

BKK1:40 pmBangkok Suvarnabhumi

May 8

BKK1:50 amBangkok Suvarnabhumi

34h 34m

2 stops

SEA10:24 pmSeattle/Tacoma Intl

$927

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

9:25 am-8:45 am

1 stop37h 20m

$676

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sat 10/10

10:15 am-7:50 pm

1 stop19h 35m

Phuket City

Mon 10/26

10:05 am-8:10 am

1 stop36h 05m

$714

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sat 10/10

10:15 am-11:55 am

1 stop35h 40m

Phuket City

Mon 10/26

6:00 pm-8:10 am

1 stop28h 10m

$720

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 8/31

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Thu 9/10

11:20 am-7:45 pm

1 stop22h 25m

$1,051

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/30

1:55 am-10:20 am

1 stop18h 25m

Chiang Mai

Thu 9/10

11:20 am-7:45 pm

1 stop22h 25m

$1,081

Quickest round-trip

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 8/30

2:10 am-10:25 am

1 stop18h 15m

Chiang Mai

Wed 9/9

11:35 am-7:40 pm

1 stop22h 05m

$1,100

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Wed 9/16

1:30 am-8:45 am

2 stops41h 15m

Krabi

Wed 9/30

9:25 am-7:20 pm

2 stops47h 55m

$1,139

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 9/6

1:15 pm-8:35 am

2 stops29h 20m

Ko Samui

Fri 9/18

7:50 am-10:35 am

2 stops40h 45m

$1,205

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Mon 5/11

5:05 pm-4:55 pm

2 stops33h 50m

Ko Samui

Sun 5/24

2:30 pm-2:45 pm

2 stops38h 15m

$1,350

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

$1,382

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 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 $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	19h 35m
Direct flights	None

The fastest flight from Seattle to Thailand takes 19h 35m

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 7.3 993 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 1,502 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $623	Free Cancellation	Rating 7.1 10,965 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $626	Free Cancellation	Rating 8.1 521 reviews	Search Asiana Airlines flights
ANA	PriceFrom $680	Free Cancellation	Rating 8.4 1,189 reviews	Search ANA flights
Delta	PriceFrom $694	Free Cancellation	Rating 7.9 8,456 reviews	Search Delta flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 9,650 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $705	Free Cancellation	Rating 7.6 1,299 reviews	Search Cathay Pacific flights
China Airlines	PriceFrom $712	Free Cancellation	Rating 8.3 818 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.