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Cheap flights from Thailand to Seattle from $509

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Thailand to Seattle departing on 4/21. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Thailand to Seattle

Recent round-trip flight deals from Thailand to Seattle

Enter your travel dates to find the best prices.
ANA Logo
7:00 am - 4:15 pm
BKK
-
SEA
23h 15m
2 stops
ANA Logo
4:30 pm - 5:55 am
SEA
-
BKK
23h 25m
1 stop
$713ANA
Wed, Sep 16 - Wed, Oct 21
ANA Logo
9:35 am - 2:25 pm
BKK
-
SEA
18h 50m
1 stop
ANA Logo
4:30 pm - 3:30 pm
SEA
-
BKK
33h 00m
1 stop
$718ANA
Tue, Sep 15 - Tue, Oct 20
Multiple Airlines Logo
1:50 pm - 9:00 am
BKK
-
SEA
33h 10m
1 stop
Multiple Airlines Logo
11:10 pm - 10:40 pm
SEA
-
BKK
33h 30m
1 stop
$730Multiple Airlines
Mon, Jun 1 - Wed, Sep 16
United Airlines Logo
9:35 am - 2:25 pm
BKK
-
SEA
18h 50m
1 stop
United Airlines Logo
7:06 am - 9:35 am
SEA
-
BKK
36h 29m
2 stops
$739United Airlines
Thu, Sep 10 - Sat, Sep 12
United Airlines Logo
9:35 am - 2:25 pm
BKK
-
SEA
18h 50m
1 stop
United Airlines Logo
4:30 pm - 4:35 am
SEA
-
BKK
22h 05m
1 stop
$749United Airlines
Thu, Sep 10 - Sat, Sep 12
China Airlines Logo
11:20 am - 7:15 pm
CNX
-
SEA
21h 55m
1 stop
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
$970China Airlines
Sun, Jun 21 - Sun, Aug 30
STARLUX Airlines Logo
5:20 pm - 4:10 pm
CNX
-
SEA
36h 50m
1 stop
STARLUX Airlines Logo
1:15 am - 4:20 pm
SEA
-
CNX
25h 05m
1 stop
$975STARLUX Airlines
Tue, Jun 23 - Sun, Aug 30
China Airlines Logo
11:20 am - 7:45 pm
CNX
-
SEA
22h 25m
1 stop
China Airlines Logo
1:55 am - 10:20 am
SEA
-
CNX
18h 25m
1 stop
$983China Airlines
Sun, Jul 5 - Mon, Sep 7
Multiple Airlines Logo
11:30 am - 10:07 am
CNX
-
SEA
36h 37m
2 stops
Multiple Airlines Logo
3:00 pm - 11:15 am
SEA
-
CNX
30h 15m
2 stops
$987Multiple Airlines
Wed, Jun 24 - Mon, Aug 31
STARLUX Airlines Logo
5:20 pm - 4:10 pm
CNX
-
SEA
36h 50m
1 stop
STARLUX Airlines Logo
1:15 am - 4:20 pm
SEA
-
CNX
25h 05m
1 stop
$999STARLUX Airlines
Tue, May 5 - Sun, Jul 12

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Asiana Airlines flights from Thailand to Seattle

Our best Asiana Airlines deals on Thailand to Seattle flight tickets
Asiana Airlines
Oct 13
BKK11:45 amBangkok Suvarnabhumi
17h 10m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Nov 2
SEA12:10 amSeattle/Tacoma Intl
30h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
$794
Asiana Airlines
May 24
BKK1:20 amBangkok Suvarnabhumi
27h 35m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Sep 15
SEA12:55 amSeattle/Tacoma Intl
19h 45m
1 stop
BKK10:40 amBangkok Suvarnabhumi
$799
Asiana Airlines
Jun 5
BKK11:45 amBangkok Suvarnabhumi
17h 10m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Sep 4
SEA12:55 amSeattle/Tacoma Intl
19h 45m
1 stop
BKK10:40 amBangkok Suvarnabhumi
$813

Air Canada flights from Thailand to Seattle

Our best Air Canada deals on Thailand to Seattle flight tickets
Air Canada
Oct 12
BKK6:30 pmBangkok Suvarnabhumi
29h 22m
2 stops
SEA9:52 amSeattle/Tacoma Intl
Nov 1
SEA3:05 pmSeattle/Tacoma Intl
24h 25m
1 stop
BKK6:30 amBangkok Suvarnabhumi
$864
Air Canada
Oct 14
CNX11:30 amChiang Mai
40h 52m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
Oct 18
SEA10:30 amSeattle/Tacoma Intl
40h 05m
2 stops
CNX4:35 pmChiang Mai
$948
Air Canada
Oct 14
CNX11:30 amChiang Mai
40h 52m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
Oct 18
SEA7:20 pmSeattle/Tacoma Intl
31h 15m
2 stops
CNX4:35 pmChiang Mai
$960

momondo Fare Finder

 
Customize your flight search to find flights from Thailand to Seattle 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 April 17, 2026.
Use the filters below to find and compare flights from Thailand to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Wed 9/16

7:00 am-4:15 pm

2 stops23h 15m

Seattle/Tacoma Intl

Wed 10/21

4:30 pm-5:55 am

1 stop23h 25m

$713

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Tue 9/15

9:35 am-2:25 pm

1 stop18h 50m

Seattle/Tacoma Intl

Tue 10/20

4:30 pm-3:30 pm

1 stop33h 00m

$718

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Mon 6/1

1:50 pm-9:00 am

1 stop33h 10m

Seattle/Tacoma Intl

Wed 9/16

11:10 pm-10:40 pm

1 stop33h 30m

$730

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 9/10

9:35 am-2:25 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sat 9/12

7:06 am-9:35 am

2 stops36h 29m

$739

BangkokSeattle

BKK - SEA

BKKSEA

Bangkok Suvarnabhumi

Thu 9/10

9:35 am-2:25 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sat 9/12

4:30 pm-4:35 am

1 stop22h 05m

$749
Quickest round-trip

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 6/21

11:20 am-7:15 pm

1 stop21h 55m

Seattle/Tacoma Intl

Sun 8/30

1:55 am-10:20 am

1 stop18h 25m

$970

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 6/23

5:20 pm-4:10 pm

1 stop36h 50m

Seattle/Tacoma Intl

Sun 8/30

1:15 am-4:20 pm

1 stop25h 05m

$975

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Sun 7/5

11:20 am-7:45 pm

1 stop22h 25m

Seattle/Tacoma Intl

Mon 9/7

1:55 am-10:20 am

1 stop18h 25m

$983

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Wed 6/24

11:30 am-10:07 am

2 stops36h 37m

Seattle/Tacoma Intl

Mon 8/31

3:00 pm-11:15 am

2 stops30h 15m

$987

Chiang MaiSeattle

CNX - SEA

CNXSEA

Chiang Mai

Tue 5/5

5:20 pm-4:10 pm

1 stop36h 50m

Seattle/Tacoma Intl

Sun 7/12

1:15 am-4:20 pm

1 stop25h 05m

$999

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 Seattle from

How to get the cheapest flight ticket from Thailand to Seattle

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 Seattle?

In general, March is the cheapest month to fly from Thailand to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $742. If you don’t want to visit Seattle in March, then you should wait until December to fly from Thailand, when ticket prices are also cheap, with an average price of $766.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Thailand when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $866 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Thailand for as low as $737 on momondo.

Can stopping save me money on Thailand to Seattle flights?

You could potentially save up to 6% on your flight if you consider stops on a Thailand to Seattle flight.

Cheap Thailand to Seattle flight deals and tips

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

Fastest flight time

17h 00m

Direct flights

None
The fastest flight from Thailand to Seattle takes 17h 00m
There are no direct flights from Thailand to Seattle. There are no popular flight routes from Thailand to Seattle.
Search flight deals

Frequently asked questions about flying from Thailand to Seattle

  • When did momondo last update prices for flights from Thailand to Seattle/Tacoma Intl Airport?

    Prices for flights from Thailand to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Thailand to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Thailand to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Thailand to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Thailand to Seattle

Compare and see reviews for airlines that fly from Thailand to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Philippine AirlinesPriceFrom $625Free CancellationRating
7.3
986 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $655Free CancellationRating
8.0
518 reviews
Search Asiana Airlines flights
STARLUX AirlinesPriceFrom $703Free CancellationRating
8.9
297 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $766Free CancellationRating
8.5
1,417 reviews
Search EVA Air flights
China AirlinesPriceFrom $774Free CancellationRating
8.3
816 reviews
Search China Airlines flights
Korean AirPriceFrom $793Free CancellationRating
8.4
1,208 reviews
Search Korean Air flights
DeltaPriceFrom $837Free CancellationRating
7.9
8,409 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Redmond
Marysville
Lakewood
Tukwila
Puyallup
Cle Elum
Federal Way
Centralia
Fife
Westport
Shoreline
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Thailand to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Thailand.

Can I find flights from Thailand to Seattle with flexible booking policies on momondo?

Flights from Thailand to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Thailand to Seattle?

momondo helps you find the best flight between Thailand and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Thailand to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Thailand to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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