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Cheap flights from Seattle to Thailand from $279

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 3/19. 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
8:45 am - 10:10 amSEA-HKT
34h 25m1 stop
Singapore Airlines Logo
11:05 am - 7:10 amHKT-SEA
35h 05m1 stop
$585Singapore Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 29
Singapore Airlines Logo
8:45 am - 9:15 amSEA-HKT
33h 30m1 stop
Singapore Airlines Logo
11:05 am - 8:10 amHKT-SEA
35h 05m1 stop
$595Singapore Airlines
Find Deal
Sun, Mar 1 - Wed, Mar 25
Singapore Airlines Logo
8:45 am - 9:15 amSEA-HKT
33h 30m1 stop
Singapore Airlines Logo
8:15 pm - 8:10 amHKT-SEA
25h 55m1 stop
$628Singapore Airlines
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Thu, Feb 26 - Mon, Mar 9
Asiana Airlines Logo
12:10 am - 9:35 pmSEA-HKT
30h 25m1 stop
Asiana Airlines Logo
10:55 pm - 1:55 pmHKT-SEA
30h 00m1 stop
$658Asiana Airlines
Find Deal
Tue, Dec 30 - Sat, Feb 28
Asiana Airlines Logo
12:10 am - 10:00 pmSEA-BKK
30h 50m1 stop
Asiana Airlines Logo
12:20 pm - 1:55 pmBKK-SEA
16h 35m1 stop
$665Asiana Airlines
Find Deal
Wed, Jan 21 - Wed, Feb 4
Philippine Airlines Logo
9:30 pm - 5:50 pmSEA-BKK
29h 20m1 stop
Philippine Airlines Logo
1:20 pm - 6:40 pmBKK-SEA
20h 20m1 stop
$678Philippine Airlines
Find Deal
Fri, Jan 30 - Tue, Feb 10
China Airlines Logo
12:10 am - 10:25 amSEA-CNX
19h 15m1 stop
China Airlines Logo
5:35 pm - 7:10 pmCNX-SEA
15h 35m1 stop
$729China Airlines
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Sun, Mar 1 - Mon, Mar 16
China Airlines Logo
12:10 am - 10:25 amSEA-CNX
19h 15m1 stop
China Airlines Logo
11:20 am - 7:30 pmCNX-SEA
22h 10m1 stop
$750China Airlines
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Tue, Mar 3 - Sat, Apr 4
EVA Air Logo
12:10 am - 9:15 pmSEA-KBV
30h 05m2 stops
EVA Air Logo
10:00 pm - 6:30 pmKBV-SEA
34h 30m2 stops
$899EVA Air
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Tue, Mar 3 - Wed, Mar 18
EVA Air Logo
12:10 am - 9:50 pmSEA-KBV
30h 40m2 stops
EVA Air Logo
9:35 am - 6:10 pmKBV-SEA
23h 35m2 stops
$900EVA Air
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Mon, Jan 26 - Mon, Feb 9

China Airlines flights from Seattle to Thailand

Our best China Airlines deals on Seattle to Thailand flight tickets
China Airlines
Mar 24
SEA1:10 amSeattle/Tacoma Intl
21h 55m
1 stop
BKK1:05 pmBangkok Suvarnabhumi
Apr 29
BKK2:40 amBangkok Suvarnabhumi
30h 50m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
$713
Find similar
China Airlines
Jan 13
SEA12:10 amSeattle/Tacoma Intl
34h 25m
1 stop
BKK1:35 amBangkok Suvarnabhumi
Feb 2
BKK10:55 amBangkok Suvarnabhumi
22h 15m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
$727
Find similar
China Airlines
Mar 1
SEA12:10 amSeattle/Tacoma Intl
19h 15m
1 stop
CNX10:25 amChiang Mai
Mar 16
CNX5:35 pmChiang Mai
15h 35m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
$729
Find similar

Asiana Airlines flights from Seattle to Thailand

Our best Asiana Airlines deals on Seattle to Thailand flight tickets
Asiana Airlines
Dec 30
SEA12:10 amSeattle/Tacoma Intl
30h 25m
1 stop
HKT9:35 pmPhuket City
Feb 28
HKT10:55 pmPhuket City
30h 00m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$658
Find similar
Asiana Airlines
Nov 30
SEA12:10 amSeattle/Tacoma Intl
30h 25m
1 stop
HKT9:35 pmPhuket City
Dec 7
HKT10:15 pmPhuket City
30h 40m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$660
Find similar
Asiana Airlines
Jan 21
SEA12:10 amSeattle/Tacoma Intl
30h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Feb 4
BKK12:20 pmBangkok Suvarnabhumi
16h 35m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$665
Find similar

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 November 26, 2025.
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

Thu 1/15

8:45 am-10:10 am

1 stop34h 25m

Phuket City

Thu 1/29

11:05 am-7:10 am

1 stop35h 05m

$585

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sun 3/1

8:45 am-9:15 am

1 stop33h 30m

Phuket City

Wed 3/25

11:05 am-8:10 am

1 stop35h 05m

$595

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Thu 2/26

8:45 am-9:15 am

1 stop33h 30m

Phuket City

Mon 3/9

8:15 pm-8:10 am

1 stop25h 55m

$628

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 12/30

12:10 am-9:35 pm

1 stop30h 25m

Phuket City

Sat 2/28

10:55 pm-1:55 pm

1 stop30h 00m

$658

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 1/21

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

Wed 2/4

12:20 pm-1:55 pm

1 stop16h 35m

$665

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 1/30

9:30 pm-5:50 pm

1 stop29h 20m

Bangkok Suvarnabhumi

Tue 2/10

1:20 pm-6:40 pm

1 stop20h 20m

$678

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 3/1

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Mon 3/16

5:35 pm-7:10 pm

1 stop15h 35m

$729

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 3/3

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Sat 4/4

11:20 am-7:30 pm

1 stop22h 10m

$750

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Tue 3/3

12:10 am-9:15 pm

2 stops30h 05m

Krabi

Wed 3/18

10:00 pm-6:30 pm

2 stops34h 30m

$899

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Mon 1/26

12:10 am-9:50 pm

2 stops30h 40m

Krabi

Mon 2/9

9:35 am-6:10 pm

2 stops23h 35m

$900

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 $751. 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 $759.

What is the cheapest day to depart on your flight to Thailand?

The cheapest day to depart on your flight to Thailand is on a Tuesday when prices can be found for as low as $931. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Thailand is Friday, with ticket prices averaging around $1,111.

What is the cheapest time of day to depart on your flight to Thailand?

Flying to Thailand from Seattle in the morning is the least expensive time of day to depart. momondo users have found prices as low as $986 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Thailand is at noon when prices are around $1,081.

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 $888 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 $739 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 59% 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 05m

Direct flights

None
The fastest flight from Seattle to Thailand takes 19h 05m
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
DeltaPriceFrom $433Free CancellationRating
7.9
7,998 reviews
Search Delta flights
Singapore AirlinesPriceFrom $522Free CancellationRating
8.1
1,409 reviews
Search Singapore Airlines flights
Philippine AirlinesPriceFrom $609Free CancellationRating
7.3
937 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $614Free CancellationRating
8.2
490 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $683Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
ANAPriceFrom $699Free CancellationRating
8.4
1,010 reviews
Search ANA flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
782 reviews
Search China Airlines flights
Cathay PacificPriceFrom $735Free CancellationRating
7.6
1,068 reviews
Search Cathay Pacific flights
STARLUX AirlinesPriceFrom $740Free CancellationRating
8.9
235 reviews
Search STARLUX Airlines flights
United AirlinesPriceFrom $781Free CancellationRating
7.4
9,046 reviews
Search United 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.

An easier way to manage your Thailand trip

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Find better results for your trip to Thailand

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