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Cheap flights from Seattle to Thailand from $348

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 11/3. 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

Singapore Airlines Logo
8:45 am - 9:15 amSEA-HKT
33h 30m1 stop
Singapore Airlines Logo
11:05 am - 7:10 amHKT-SEA
35h 05m1 stop
$512Singapore Airlines
Find Deal
Fri, Jan 30 - Mon, Feb 9
Singapore Airlines Logo
8:45 am - 7:50 amSEA-HKT
32h 05m1 stop
Singapore Airlines Logo
8:15 pm - 7:10 amHKT-SEA
25h 55m1 stop
$515Singapore Airlines
Find Deal
Fri, Jan 30 - Fri, Feb 6
Asiana Airlines Logo
2:15 pm - 11:10 pmSEA-BKK
18h 55m1 stop
Asiana Airlines Logo
1:20 am - 12:30 pmBKK-SEA
25h 10m1 stop
$669Asiana Airlines
Find Deal
Tue, Sep 23 - Mon, Oct 6
Asiana Airlines Logo
12:10 am - 10:05 pmSEA-BKK
30h 55m1 stop
Asiana Airlines Logo
11:55 pm - 1:55 pmBKK-SEA
29h 00m1 stop
$670Asiana Airlines
Find Deal
Mon, Jan 26 - Thu, Mar 5
ANA Logo
3:40 pm - 5:10 amSEA-BKK
22h 30m1 stop
ANA Logo
9:25 am - 1:20 pmBKK-SEA
18h 55m1 stop
$681ANA
Find Deal
Tue, Nov 4 - Tue, Nov 18
ANA Logo
4:30 pm - 4:35 amSEA-BKK
22h 05m1 stop
ANA Logo
9:35 pm - 2:25 pmBKK-SEA
30h 50m1 stop
$710ANA
Find Deal
Wed, Sep 17 - Wed, Oct 8
China Airlines Logo
1:10 am - 10:20 amSEA-CNX
19h 10m1 stop
China Airlines Logo
11:25 am - 6:10 pmCNX-SEA
21h 45m1 stop
$781China Airlines
Find Deal
Mon, Oct 20 - Tue, Nov 4
China Airlines Logo
12:10 am - 10:25 amSEA-CNX
19h 15m1 stop
China Airlines Logo
11:25 am - 6:10 pmCNX-SEA
21h 45m1 stop
$814China Airlines
Find Deal
Mon, Nov 10 - Tue, Nov 18
EVA Air Logo
12:10 am - 10:35 amSEA-CNX
19h 25m1 stop
EVA Air Logo
11:50 am - 7:10 pmCNX-SEA
21h 20m1 stop
$834EVA Air
Find Deal
Wed, Jan 14 - Wed, Mar 18
EVA Air Logo
11:30 pm - 10:35 amSEA-CNX
20h 05m1 stop
EVA Air Logo
11:50 am - 5:40 pmCNX-SEA
20h 50m1 stop
$853EVA Air
Find Deal
Tue, Nov 4 - Tue, Nov 11

Korean Air flights from Seattle to Thailand

Our best Korean Air deals on Seattle to Thailand flight tickets
Korean Air
Nov 6
SEA7:25 amSeattle/Tacoma Intl
26h 20m
2 stops
BKK12:45 amBangkok Suvarnabhumi
Nov 23
BKK12:55 amBangkok Suvarnabhumi
23h 05m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$690
Find similar
Korean Air
Nov 4
SEA11:00 amSeattle/Tacoma Intl
19h 30m
1 stop
BKK9:30 pmBangkok Suvarnabhumi
Nov 17
BKK12:55 amBangkok Suvarnabhumi
23h 05m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$698
Find similar
Korean Air
Oct 21
SEA7:10 amSeattle/Tacoma Intl
27h 55m
2 stops
BKK1:05 amBangkok Suvarnabhumi
Dec 10
BKK11:15 pmBangkok Suvarnabhumi
24h 45m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$699
Find similar

Singapore Airlines flights from Seattle to Thailand

Our best Singapore Airlines deals on Seattle to Thailand flight tickets
Singapore Airlines
Jan 30
SEA8:45 amSeattle/Tacoma Intl
33h 30m
1 stop
HKT9:15 amPhuket City
Feb 9
HKT11:05 amPhuket City
35h 05m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$512
Find similar
Singapore Airlines
Jan 30
SEA8:45 amSeattle/Tacoma Intl
32h 05m
1 stop
HKT7:50 amPhuket City
Feb 6
HKT8:15 pmPhuket City
25h 55m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$515
Find similar
Singapore Airlines
Jan 23
SEA8:45 amSeattle/Tacoma Intl
33h 30m
1 stop
HKT9:15 amPhuket City
Jan 30
HKT10:05 amPhuket City
36h 05m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$517
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 August 28, 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

Fri 1/30

8:45 am-9:15 am

1 stop33h 30m

Phuket City

Mon 2/9

11:05 am-7:10 am

1 stop35h 05m

$512

SeattlePhuket City

SEA - HKT

SEAHKT

Seattle/Tacoma Intl

Fri 1/30

8:45 am-7:50 am

1 stop32h 05m

Phuket City

Fri 2/6

8:15 pm-7:10 am

1 stop25h 55m

$515

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/23

2:15 pm-11:10 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Mon 10/6

1:20 am-12:30 pm

1 stop25h 10m

$669

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 1/26

12:10 am-10:05 pm

1 stop30h 55m

Bangkok Suvarnabhumi

Thu 3/5

11:55 pm-1:55 pm

1 stop29h 00m

$670

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 11/4

3:40 pm-5:10 am

1 stop22h 30m

Bangkok Suvarnabhumi

Tue 11/18

9:25 am-1:20 pm

1 stop18h 55m

$681

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 9/17

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 10/8

9:35 pm-2:25 pm

1 stop30h 50m

$710

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 10/20

1:10 am-10:20 am

1 stop19h 10m

Chiang Mai

Tue 11/4

11:25 am-6:10 pm

1 stop21h 45m

$781

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Mon 11/10

12:10 am-10:25 am

1 stop19h 15m

Chiang Mai

Tue 11/18

11:25 am-6:10 pm

1 stop21h 45m

$814

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Wed 1/14

12:10 am-10:35 am

1 stop19h 25m

Chiang Mai

Wed 3/18

11:50 am-7:10 pm

1 stop21h 20m

$834

SeattleChiang Mai

SEA - CNX

SEACNX

Seattle/Tacoma Intl

Tue 11/4

11:30 pm-10:35 am

1 stop20h 05m

Chiang Mai

Tue 11/11

11:50 am-5:40 pm

1 stop20h 50m

$853

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 February is, on average, the cheapest month to fly to Thailand from Seattle, with most prices found around $790. If you are unable to visit Thailand during the month of February, then departing from Seattle during the month March is also very affordable. Most momondo users find prices during this month for around $820.

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 $925 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 $786 on momondo.

Cheap Seattle to Thailand flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Thailand

Direct flights

None
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
7,977 reviews
Search Delta flights
Singapore AirlinesPriceFrom $533Free CancellationRating
8.1
1,352 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $629Free CancellationRating
8.2
477 reviews
Search Asiana Airlines flights
Philippine AirlinesPriceFrom $675Free CancellationRating
7.2
905 reviews
Search Philippine Airlines flights
Korean AirPriceFrom $677Free CancellationRating
8.4
1,133 reviews
Search Korean Air flights
ANAPriceFrom $716Free CancellationRating
8.4
943 reviews
Search ANA flights
China AirlinesPriceFrom $730Free CancellationRating
8.3
765 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $742Free CancellationRating
8.9
211 reviews
Search STARLUX Airlines flights
China EasternPriceFrom $755Free CancellationRating
7.2
164 reviews
Search China Eastern flights
Turkish AirlinesPriceFrom $773Free CancellationRating
7.3
3,954 reviews
Search Turkish 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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