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Cheap flights from Seattle to Thailand from $276

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Thailand departing on 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Thailand

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 7:15 pm
SEA
-
HKT
19h 00m
1 stop
Singapore Airlines Logo
8:10 pm - 8:45 am
HKT
-
SEA
26h 35m
1 stop
$508Singapore Airlines
Tue, Apr 14 - Fri, Apr 24
Singapore Airlines Logo
10:15 am - 7:15 pm
SEA
-
HKT
19h 00m
1 stop
Singapore Airlines Logo
9:55 am - 8:45 am
HKT
-
SEA
36h 50m
1 stop
$509Singapore Airlines
Tue, Apr 14 - Fri, Apr 24
Asiana Airlines Logo
12:10 am - 10:00 pm
SEA
-
BKK
30h 50m
1 stop
Asiana Airlines Logo
11:55 pm - 2:55 pm
BKK
-
SEA
29h 00m
1 stop
$648Asiana Airlines
Sun, Mar 1 - Thu, Mar 12
Asiana Airlines Logo
12:10 am - 11:15 am
SEA
-
BKK
20h 05m
1 stop
Asiana Airlines Logo
11:55 pm - 2:55 pm
BKK
-
SEA
29h 00m
1 stop
$649Asiana Airlines
Sat, Mar 7 - Sat, Mar 21
Cathay Pacific Logo
11:45 am - 9:45 am
SEA
-
CNX
32h 00m
1 stop
Cathay Pacific Logo
7:25 pm - 10:05 am
CNX
-
SEA
28h 40m
1 stop
$702Cathay Pacific
Mon, Apr 20 - Sun, Apr 26
Cathay Pacific Logo
11:45 am - 5:20 pm
SEA
-
HKT
39h 35m
1 stop
Cathay Pacific Logo
11:50 am - 10:05 am
HKT
-
SEA
36h 15m
1 stop
$708Cathay Pacific
Wed, Apr 15 - Tue, Apr 21
China Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$734China Airlines
Mon, Apr 13 - Tue, May 5
China Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m
1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
$736China Airlines
Sun, Apr 19 - Mon, Apr 27
EVA Air Logo
12:10 am - 9:15 pm
SEA
-
KBV
30h 05m
2 stops
EVA Air Logo
9:50 am - 6:30 pm
KBV
-
SEA
22h 40m
2 stops
$871EVA Air
Wed, Mar 4 - Thu, Mar 12
EVA Air Logo
12:10 am - 9:15 pm
SEA
-
KBV
30h 05m
2 stops
EVA Air Logo
9:50 am - 7:10 pm
KBV
-
SEA
23h 20m
2 stops
$877EVA Air
Sun, Mar 1 - Wed, Mar 18

Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets
Singapore Airlines
Apr 14
SEA10:15 amSeattle/Tacoma Intl
19h 00m
1 stop
HKT7:15 pmPhuket City
Apr 24
HKT3:00 pmPhuket City
31h 45m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$508
Singapore Airlines
Apr 14
SEA10:15 amSeattle/Tacoma Intl
19h 00m
1 stop
HKT7:15 pmPhuket City
Apr 24
HKT9:55 amPhuket City
36h 50m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$509
Singapore Airlines
Apr 21
SEA10:15 amSeattle/Tacoma Intl
40h 55m
1 stop
HKT5:10 pmPhuket City
Apr 30
HKT9:55 amPhuket City
36h 50m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$532

China Airlines flights from Seattle to Thailand

Our best China Airlines deals on Seattle to Thailand flight tickets
China Airlines
Mar 2
SEA12:10 amSeattle/Tacoma Intl
18h 40m
1 stop
BKK9:50 amBangkok Suvarnabhumi
Mar 12
BKK2:05 pmBangkok Suvarnabhumi
19h 05m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$694
China Airlines
Mar 16
SEA1:10 amSeattle/Tacoma Intl
25h 35m
1 stop
BKK4:45 pmBangkok Suvarnabhumi
May 18
BKK2:40 amBangkok Suvarnabhumi
30h 35m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$697
China Airlines
Feb 15
SEA12:10 amSeattle/Tacoma Intl
18h 40m
1 stop
BKK9:50 amBangkok Suvarnabhumi
Mar 9
BKK5:50 pmBangkok Suvarnabhumi
15h 20m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$706

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Thailand that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Seattle to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 4/14

10:15 am-7:15 pm

1 stop19h 00m

Phuket City

Fri 4/24

8:10 pm-8:45 am

1 stop26h 35m

$508

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 4/14

10:15 am-7:15 pm

1 stop19h 00m

Phuket City

Fri 4/24

9:55 am-8:45 am

1 stop36h 50m

$509

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 3/1

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Thu 3/12

11:55 pm-2:55 pm

1 stop29h 00m

$648

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 3/7

12:10 am-11:15 am

1 stop20h 05m

Bangkok Suvarnabhumi

Sat 3/21

11:55 pm-2:55 pm

1 stop29h 00m

$649

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 4/20

11:45 am-9:45 am

1 stop32h 00m

Chiang Mai

Sun 4/26

7:25 pm-10:05 am

1 stop28h 40m

$702

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Wed 4/15

11:45 am-5:20 pm

1 stop39h 35m

Phuket City

Tue 4/21

11:50 am-10:05 am

1 stop36h 15m

$708

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 4/13

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Tue 5/5

11:20 am-7:15 pm

1 stop21h 55m

$734

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 4/19

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Mon 4/27

11:20 am-7:15 pm

1 stop21h 55m

$736

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Wed 3/4

12:10 am-9:15 pm

2 stops30h 05m

Krabi

Thu 3/12

9:50 am-6:30 pm

2 stops22h 40m

$871

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Sun 3/1

12:10 am-9:15 pm

2 stops30h 05m

Krabi

Wed 3/18

9:50 am-7:10 pm

2 stops23h 20m

$877

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Thailand from

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

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 $769.

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 $882 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 $747 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 00m

Direct flights

None
The fastest flight from Seattle to Thailand takes 19h 00m
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?

  • 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 AirlinesPriceFrom $154Free CancellationRating
7.3
954 reviews
Search Philippine Airlines flights
Korean AirPriceFrom $418Free CancellationRating
8.4
1,189 reviews
Search Korean Air flights
Singapore AirlinesPriceFrom $513Free CancellationRating
8.2
1,452 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $626Free CancellationRating
8.1
505 reviews
Search Asiana Airlines flights
ANAPriceFrom $683Free CancellationRating
8.4
1,089 reviews
Search ANA flights
DeltaPriceFrom $694Free CancellationRating
7.9
8,175 reviews
Search Delta flights
United AirlinesPriceFrom $700Free CancellationRating
7.4
9,257 reviews
Search United Airlines flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
803 reviews
Search China Airlines flights
Cathay PacificPriceFrom $735Free CancellationRating
7.6
1,160 reviews
Search Cathay Pacific flights
STARLUX AirlinesPriceFrom $740Free CancellationRating
8.9
271 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.

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