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Cheap flights from Seattle to Thailand from $278

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 3/8. 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
9:45 am - 2:05 pm
SEA
-
HKT
38h 20m1 stop
Singapore Airlines Logo
9:55 am - 8:45 am
HKT
-
SEA
36h 50m1 stop
$594Singapore Airlines
Sun, Mar 15 - Wed, Apr 15
Singapore Airlines Logo
8:45 am - 9:15 am
SEA
-
HKT
33h 30m1 stop
Singapore Airlines Logo
8:40 am - 7:10 am
HKT
-
SEA
37h 30m1 stop
$610Singapore Airlines
Tue, Feb 3 - Thu, Feb 12
Korean Air Logo
7:20 am - 12:55 am
SEA
-
BKK
27h 35m2 stops
Korean Air Logo
9:40 am - 8:02 pm
BKK
-
SEA
24h 22m2 stops
$659Korean Air
Thu, Mar 12 - Fri, Mar 20
Asiana Airlines Logo
12:10 am - 9:35 pm
SEA
-
HKT
31h 25m1 stop
Asiana Airlines Logo
10:15 pm - 2:55 pm
HKT
-
SEA
30h 40m1 stop
$712Asiana Airlines
Sun, Mar 15 - Wed, Apr 15
Asiana Airlines Logo
12:10 am - 9:35 pm
SEA
-
HKT
30h 25m1 stop
Asiana Airlines Logo
10:55 pm - 1:55 pm
HKT
-
SEA
30h 00m1 stop
$713Asiana Airlines
Sun, Feb 8 - Thu, Feb 26
China Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m1 stop
$731China Airlines
Sun, Apr 12 - Thu, Apr 23
Korean Air Logo
12:50 pm - 10:10 pm
SEA
-
HKT
19h 20m1 stop
Korean Air Logo
11:25 pm - 10:40 am
HKT
-
SEA
25h 15m1 stop
$752Korean Air
Tue, Apr 7 - Tue, Apr 14
China Airlines Logo
1:15 am - 10:20 am
SEA
-
CNX
19h 05m1 stop
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m1 stop
$764China Airlines
Mon, Apr 13 - Thu, Apr 23
EVA Air Logo
1:30 am - 10:25 am
SEA
-
CNX
18h 55m1 stop
EVA Air Logo
11:35 am - 7:30 pm
CNX
-
SEA
21h 55m1 stop
$780EVA Air
Wed, Apr 15 - Mon, Apr 27
EVA Air Logo
11:30 pm - 9:50 pm
SEA
-
KBV
31h 20m2 stops
EVA Air Logo
9:35 am - 6:10 pm
KBV
-
SEA
23h 35m2 stops
$869EVA Air
Tue, Jan 27 - Mon, Feb 9

Philippine Airlines flights from Seattle to Thailand

Our best Philippine Airlines deals on Seattle to Thailand flight tickets
Philippine Airlines
Mar 19
SEA10:30 pmSeattle/Tacoma Intl
23h 30m
1 stop
BKK12:00 pmBangkok Suvarnabhumi
May 21
BKK1:25 pmBangkok Suvarnabhumi
20h 40m
1 stop
SEA8:05 pmSeattle/Tacoma Intl
$682
Find similar
Philippine Airlines
Mar 6
SEA9:30 pmSeattle/Tacoma Intl
34h 30m
1 stop
BKK11:00 pmBangkok Suvarnabhumi
Mar 24
BKK1:20 pmBangkok Suvarnabhumi
20h 20m
1 stop
SEA7:40 pmSeattle/Tacoma Intl
$683
Find similar

Japan Airlines flights from Seattle to Thailand

Our best Japan Airlines deals on Seattle to Thailand flight tickets
Japan Airlines
Jan 25
SEA8:25 amSeattle/Tacoma Intl
41h 00m
2 stops
BKK4:25 pmBangkok Suvarnabhumi
Feb 2
BKK8:05 amBangkok Suvarnabhumi
23h 42m
2 stops
SEA4:47 pmSeattle/Tacoma Intl
$688
Find similar
Japan Airlines
Jan 27
SEA11:43 amSeattle/Tacoma Intl
61h 42m
2 stops
BKK4:25 pmBangkok Suvarnabhumi
Feb 9
BKK8:05 amBangkok Suvarnabhumi
16h 50m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$695
Find similar
Japan Airlines
Jan 27
SEA8:25 amSeattle/Tacoma Intl
29h 40m
2 stops
BKK5:05 amBangkok Suvarnabhumi
Feb 9
BKK10:05 pmBangkok Suvarnabhumi
33h 42m
2 stops
SEA4:47 pmSeattle/Tacoma Intl
$697
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 December 23, 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

Sun 3/15

9:45 am-2:05 pm

1 stop38h 20m

Phuket City

Wed 4/15

9:55 am-8:45 am

1 stop36h 50m

$594

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 2/3

8:45 am-9:15 am

1 stop33h 30m

Phuket City

Thu 2/12

8:40 am-7:10 am

1 stop37h 30m

$610

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 3/12

7:20 am-12:55 am

2 stops27h 35m

Bangkok Suvarnabhumi

Fri 3/20

9:40 am-8:02 pm

2 stops24h 22m

$659

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sun 3/15

12:10 am-9:35 pm

1 stop31h 25m

Phuket City

Wed 4/15

10:15 pm-2:55 pm

1 stop30h 40m

$712

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Sun 2/8

12:10 am-9:35 pm

1 stop30h 25m

Phuket City

Thu 2/26

10:55 pm-1:55 pm

1 stop30h 00m

$713

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Sun 4/12

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Thu 4/23

11:20 am-7:15 pm

1 stop21h 55m

$731

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Tue 4/7

12:50 pm-10:10 pm

1 stop19h 20m

Phuket City

Tue 4/14

11:25 pm-10:40 am

1 stop25h 15m

$752

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 4/13

1:15 am-10:20 am

1 stop19h 05m

Chiang Mai

Thu 4/23

11:20 am-7:15 pm

1 stop21h 55m

$764

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Wed 4/15

1:30 am-10:25 am

1 stop18h 55m

Chiang Mai

Mon 4/27

11:35 am-7:30 pm

1 stop21h 55m

$780

SeattleKrabi

SEA - KBV

SEAKBV

Seattle/Tacoma Intl

Tue 1/27

11:30 pm-9:50 pm

2 stops31h 20m

Krabi

Mon 2/9

9:35 am-6:10 pm

2 stops23h 35m

$869

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 $893 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 $750 on momondo.

Can stopping save me money on Seattle to Thailand flights?

You could potentially save up to 54% 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 50m

Direct flights

None
The fastest flight from Seattle to Thailand takes 18h 50m
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
8,015 reviews
Search Delta flights
Singapore AirlinesPriceFrom $520Free CancellationRating
8.1
1,419 reviews
Search Singapore Airlines flights
Philippine AirlinesPriceFrom $605Free CancellationRating
7.3
943 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $611Free CancellationRating
8.2
499 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $685Free CancellationRating
8.4
1,185 reviews
Search Korean Air flights
ANAPriceFrom $693Free CancellationRating
8.4
1,041 reviews
Search ANA flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
792 reviews
Search China Airlines flights
Cathay PacificPriceFrom $735Free CancellationRating
7.6
1,103 reviews
Search Cathay Pacific flights
STARLUX AirlinesPriceFrom $740Free CancellationRating
8.9
248 reviews
Search STARLUX Airlines flights
United AirlinesPriceFrom $753Free CancellationRating
7.4
9,109 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Thailand

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