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Cheap flights from Seattle to Bangkok from $362

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 Bangkok departing on 2/25. 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 Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Asiana Airlines Logo
12:10 am - 10:00 pm
SEA
-
BKK
31h 50m
1 stop
Asiana Airlines Logo
11:55 pm - 2:55 pm
BKK
-
SEA
29h 00m
1 stop
$648Asiana Airlines
dom., mar. 8 - vie., mar. 13
Asiana Airlines Logo
12:10 am - 10:00 pm
SEA
-
BKK
30h 50m
1 stop
Asiana Airlines Logo
12:20 pm - 2:55 pm
BKK
-
SEA
16h 35m
1 stop
$649Asiana Airlines
lun., mar. 2 - mié., mar. 18
Multiple Airlines Logo
7:06 pm - 12:20 pm
SEA
-
BKK
27h 14m
2 stops
Multiple Airlines Logo
6:30 pm - 8:45 am
BKK
-
SEA
28h 15m
1 stop
$652Multiple Airlines
mié., abr. 22 - jue., may. 7
Singapore Airlines Logo
10:15 am - 8:05 am
SEA
-
BKK
31h 50m
1 stop
Singapore Airlines Logo
8:15 pm - 8:45 am
BKK
-
SEA
50h 30m
1 stop
$654Singapore Airlines
mar., abr. 21 - mar., may. 5
Asiana Airlines Logo
12:10 am - 10:00 pm
SEA
-
BKK
30h 50m
1 stop
Asiana Airlines Logo
12:20 pm - 2:55 pm
BKK
-
SEA
16h 35m
1 stop
$655Asiana Airlines
lun., mar. 2 - mié., mar. 18
Asiana Airlines Logo
12:55 am - 11:10 pm
SEA
-
BKK
32h 15m
1 stop
Asiana Airlines Logo
1:20 am - 2:55 pm
BKK
-
SEA
27h 35m
1 stop
$657Asiana Airlines
mar., abr. 21 - mié., may. 6
Asiana Airlines Logo
12:55 am - 11:10 pm
SEA
-
BKK
32h 15m
1 stop
Asiana Airlines Logo
12:20 pm - 2:55 pm
BKK
-
SEA
16h 35m
1 stop
$658Asiana Airlines
dom., abr. 5 - vie., may. 15
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
$659Asiana Airlines
lun., mar. 2 - jue., mar. 12
Asiana Airlines Logo
12:55 am - 11:15 am
SEA
-
BKK
20h 20m
1 stop
Asiana Airlines Logo
12:20 pm - 2:55 pm
BKK
-
SEA
16h 35m
1 stop
$660Asiana Airlines
lun., may. 4 - vie., may. 15
Asiana Airlines Logo
12:55 am - 11:15 am
SEA
-
BKK
20h 20m
1 stop
Asiana Airlines Logo
12:20 pm - 2:55 pm
BKK
-
SEA
16h 35m
1 stop
$661Asiana Airlines
vie., may. 1 - jue., may. 14

Korean Air flights from Seattle to Bangkok Suvarnabhumi Airport

Our best Korean Air deals on Seattle to Bangkok Suvarnabhumi Airport flight tickets
Korean Air
Mar 9
SEA7:25 amSeattle/Tacoma Intl
40h 00m
2 stops
BKK1:25 pmBangkok Suvarnabhumi
Mar 12
BKK2:05 amBangkok Suvarnabhumi
21h 55m
1 stop
SEA10:00 amSeattle/Tacoma Intl
$682
Korean Air
Apr 30
SEA7:00 amSeattle/Tacoma Intl
26h 40m
2 stops
BKK11:40 pmBangkok Suvarnabhumi
May 12
BKK9:40 pmBangkok Suvarnabhumi
27h 00m
1 stop
SEA10:40 amSeattle/Tacoma Intl
$693
Korean Air
Apr 30
SEA7:00 amSeattle/Tacoma Intl
26h 40m
2 stops
BKK11:40 pmBangkok Suvarnabhumi
May 13
BKK9:50 amBangkok Suvarnabhumi
24h 40m
2 stops
SEA8:30 pmSeattle/Tacoma Intl
$699

Asiana Airlines flights from Seattle to Bangkok Suvarnabhumi Airport

Our best Asiana Airlines deals on Seattle to Bangkok Suvarnabhumi Airport flight tickets
Asiana Airlines
Mar 8
SEA12:10 amSeattle/Tacoma Intl
31h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Mar 13
BKK11:55 pmBangkok Suvarnabhumi
29h 00m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$648
Asiana Airlines
Mar 2
SEA12:10 amSeattle/Tacoma Intl
30h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Mar 18
BKK12:20 pmBangkok Suvarnabhumi
16h 35m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$649
Asiana Airlines
Mar 2
SEA12:10 amSeattle/Tacoma Intl
30h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Mar 18
BKK12:20 pmBangkok Suvarnabhumi
16h 35m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$655

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bangkok Suvarnabhumi Airport 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 febrero 3, 2026.
Use the filters below to find and compare flights from Seattle to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 3/8

12:10 am-10:00 pm

1 stop31h 50m

Bangkok Suvarnabhumi

vie. 3/13

11:55 pm-2:55 pm

1 stop29h 00m

$648

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 3/2

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

mié. 3/18

12:20 pm-2:55 pm

1 stop16h 35m

$649

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mié. 4/22

7:06 pm-12:20 pm

2 stops27h 14m

Bangkok Suvarnabhumi

jue. 5/7

6:30 pm-8:45 am

1 stop28h 15m

$652

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 4/21

10:15 am-8:05 am

1 stop31h 50m

Bangkok Suvarnabhumi

mar. 5/5

8:15 pm-8:45 am

1 stop50h 30m

$654

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 3/2

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

mié. 3/18

12:20 pm-2:55 pm

1 stop16h 35m

$655

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

mar. 4/21

12:55 am-11:10 pm

1 stop32h 15m

Bangkok Suvarnabhumi

mié. 5/6

1:20 am-2:55 pm

1 stop27h 35m

$657

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

dom. 4/5

12:55 am-11:10 pm

1 stop32h 15m

Bangkok Suvarnabhumi

vie. 5/15

12:20 pm-2:55 pm

1 stop16h 35m

$658

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 3/2

12:10 am-10:00 pm

1 stop30h 50m

Bangkok Suvarnabhumi

jue. 3/12

11:55 pm-2:55 pm

1 stop29h 00m

$659

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

lun. 5/4

12:55 am-11:15 am

1 stop20h 20m

Bangkok Suvarnabhumi

vie. 5/15

12:20 pm-2:55 pm

1 stop16h 35m

$660

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

vie. 5/1

12:55 am-11:15 am

1 stop20h 20m

Bangkok Suvarnabhumi

jue. 5/14

12:20 pm-2:55 pm

1 stop16h 35m

$661

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 Bangkok from

How to get the cheapest flight ticket from Seattle to Bangkok Suvarnabhumi Airport

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 Bangkok Suvarnabhumi Airport?

The month of September is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Seattle, with most prices found around $749. The month of February is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Seattle averaging around $769.

How far in advance should I book a flight to Bangkok Suvarnabhumi Airport?

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $882 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Seattle for as low as $747 on momondo.

How have Seattle to Bangkok Suvarnabhumi Airport flight prices changed over time?

As of February 2026, prices for Seattle to Bangkok Suvarnabhumi Airport flights are approximately 20% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Bangkok Suvarnabhumi Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bangkok Suvarnabhumi Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bangkok Suvarnabhumi Airport (SEA to BKK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bangkok Suvarnabhumi Airport

Fastest flight time

19h 15m

Direct flights

None
The fastest flight from Seattle to Bangkok Suvarnabhumi Airport takes 19h 15m
There are no direct flights from Seattle to Bangkok Suvarnabhumi Airport. There are no popular flight routes from Seattle to Bangkok Suvarnabhumi Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to Bangkok Suvarnabhumi by plane?

    The straight-line distance from Seattle/Tacoma Intl to Bangkok Suvarnabhumi is 7433.8 mi. 19h 15m is a normal flight duration for this route.

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

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

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

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bangkok Suvarnabhumi 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 Seattle/Tacoma Intl Airport to Bangkok Suvarnabhumi Airport.

  • What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?

    The travel and health documents required for your trip to Bangkok Suvarnabhumi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok Suvarnabhumi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Bangkok Suvarnabhumi Airport?

Best airlines flying from Seattle to Bangkok Suvarnabhumi Airport

Compare and see reviews for airlines that fly from Seattle to Bangkok Suvarnabhumi Airport with momondo
Airline
Rating
Free Cancellation
Price
Philippine AirlinesPriceFrom $154Free CancellationRating
7.3
955 reviews
Search Philippine Airlines flights
Singapore AirlinesPriceFrom $517Free CancellationRating
8.2
1,443 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $626Free CancellationRating
8.1
502 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $666Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
ANAPriceFrom $683Free CancellationRating
8.4
1,084 reviews
Search ANA flights
DeltaPriceFrom $694Free CancellationRating
7.9
8,139 reviews
Search Delta flights
United AirlinesPriceFrom $700Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
China AirlinesPriceFrom $733Free CancellationRating
8.3
803 reviews
Search China Airlines flights
Cathay PacificPriceFrom $735Free CancellationRating
7.6
1,159 reviews
Search Cathay Pacific flights
STARLUX AirlinesPriceFrom $740Free CancellationRating
8.9
269 reviews
Search STARLUX Airlines flights

Traveling to a place near Bangkok?

Book flights to Bangkok if you plan to visit one of these locations
Pattaya
Ko Samet
Kanchanaburi
Cha-am
Ayutthaya
Ko Lan
Chonburi
Pak Chong
Sattahip
Phetchaburi

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Bangkok. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Seattle to Bangkok flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bangkok from Seattle.

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

Of course. momondo tracks the price of Seattle to Bangkok flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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