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Cheap flights from Seattle to Bangkok from $410

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 10/17. 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 Seattle to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
2:05 pm - 8:05 am
SEA
-
BKK
28h 00m
2 stops
Singapore Airlines Logo
9:20 am - 8:45 am
BKK
-
SEA
37h 25m
1 stop
$865Singapore Airlines
Wed, Oct 7 - Wed, Oct 14
Singapore Airlines Logo
2:10 pm - 8:05 am
SEA
-
BKK
27h 55m
2 stops
Singapore Airlines Logo
12:15 pm - 8:45 am
BKK
-
SEA
34h 30m
1 stop
$866Singapore Airlines
Wed, Oct 7 - Wed, Oct 14
Singapore Airlines Logo
10:15 am - 11:00 am
SEA
-
BKK
34h 45m
1 stop
Singapore Airlines Logo
9:15 pm - 8:45 am
BKK
-
SEA
49h 30m
1 stop
$867Singapore Airlines
Fri, Oct 16 - Sun, Oct 18
Singapore Airlines Logo
10:15 am - 5:15 pm
SEA
-
BKK
41h 00m
1 stop
Singapore Airlines Logo
9:20 am - 8:45 am
BKK
-
SEA
37h 25m
1 stop
$875Singapore Airlines
Thu, Oct 1 - Fri, Oct 16
Singapore Airlines Logo
10:15 am - 5:15 pm
SEA
-
BKK
41h 00m
1 stop
Singapore Airlines Logo
12:15 pm - 8:45 am
BKK
-
SEA
34h 30m
1 stop
$878Singapore Airlines
Thu, Oct 1 - Fri, Oct 16
Singapore Airlines Logo
10:15 am - 7:00 pm
SEA
-
BKK
42h 45m
1 stop
Singapore Airlines Logo
9:15 pm - 8:45 am
BKK
-
SEA
49h 30m
1 stop
$883Singapore Airlines
Fri, Oct 2 - Sun, Oct 11
Singapore Airlines Logo
10:15 am - 12:20 pm
SEA
-
BKK
36h 05m
1 stop
Singapore Airlines Logo
1:35 pm - 8:45 am
BKK
-
SEA
33h 10m
1 stop
$889Singapore Airlines
Tue, Sep 1 - Mon, Sep 14
Asiana Airlines Logo
12:10 am - 10:40 am
SEA
-
BKK
20h 30m
1 stop
Asiana Airlines Logo
1:20 am - 3:15 pm
BKK
-
SEA
27h 55m
1 stop
$890Asiana Airlines
Tue, Sep 1 - Sun, Sep 6
Singapore Airlines Logo
6:01 pm - 12:20 pm
SEA
-
BKK
28h 19m
2 stops
Singapore Airlines Logo
9:15 pm - 8:45 am
BKK
-
SEA
25h 30m
1 stop
$891Singapore Airlines
Mon, Aug 31 - Wed, Sep 30
Asiana Airlines Logo
12:10 am - 10:40 am
SEA
-
BKK
20h 30m
1 stop
Asiana Airlines Logo
1:20 am - 3:15 pm
BKK
-
SEA
27h 55m
1 stop
$895Asiana Airlines
Tue, Aug 25 - Sun, Sep 6

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Asiana Airlines flights from Seattle to Bangkok Suvarnabhumi Airport

Our best Asiana Airlines deals on Seattle to Bangkok Suvarnabhumi Airport flight tickets
Asiana Airlines
Sep 1
SEA12:10 amSeattle/Tacoma Intl
20h 30m
1 stop
BKK10:40 amBangkok Suvarnabhumi
Sep 6
BKK1:20 amBangkok Suvarnabhumi
27h 55m
1 stop
SEA3:15 pmSeattle/Tacoma Intl
$890
Asiana Airlines
Aug 25
SEA12:10 amSeattle/Tacoma Intl
20h 30m
1 stop
BKK10:40 amBangkok Suvarnabhumi
Sep 6
BKK1:20 amBangkok Suvarnabhumi
27h 55m
1 stop
SEA3:15 pmSeattle/Tacoma Intl
$895
Asiana Airlines
Oct 20
SEA12:10 amSeattle/Tacoma Intl
20h 30m
1 stop
BKK10:40 amBangkok Suvarnabhumi
Nov 11
BKK11:55 pmBangkok Suvarnabhumi
29h 00m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$914

Singapore Airlines flights from Seattle to Bangkok Suvarnabhumi Airport

Our best Singapore Airlines deals on Seattle to Bangkok Suvarnabhumi Airport flight tickets
Singapore Airlines
Oct 7
SEA2:05 pmSeattle/Tacoma Intl
28h 00m
2 stops
BKK8:05 amBangkok Suvarnabhumi
Oct 14
BKK9:20 amBangkok Suvarnabhumi
37h 25m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$865
Singapore Airlines
Oct 7
SEA2:10 pmSeattle/Tacoma Intl
27h 55m
2 stops
BKK8:05 amBangkok Suvarnabhumi
Oct 14
BKK12:15 pmBangkok Suvarnabhumi
34h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$866
Singapore Airlines
Oct 16
SEA10:15 amSeattle/Tacoma Intl
34h 45m
1 stop
BKK11:00 amBangkok Suvarnabhumi
Oct 18
BKK9:15 pmBangkok Suvarnabhumi
49h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$867

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 May 5, 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

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 10/7

2:05 pm-8:05 am

2 stops28h 00m

Bangkok Suvarnabhumi

Wed 10/14

9:20 am-8:45 am

1 stop37h 25m

$865

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 10/7

2:10 pm-8:05 am

2 stops27h 55m

Bangkok Suvarnabhumi

Wed 10/14

12:15 pm-8:45 am

1 stop34h 30m

$866

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 10/16

10:15 am-11:00 am

1 stop34h 45m

Bangkok Suvarnabhumi

Sun 10/18

9:15 pm-8:45 am

1 stop49h 30m

$867

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/1

10:15 am-5:15 pm

1 stop41h 00m

Bangkok Suvarnabhumi

Fri 10/16

9:20 am-8:45 am

1 stop37h 25m

$875

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/1

10:15 am-5:15 pm

1 stop41h 00m

Bangkok Suvarnabhumi

Fri 10/16

12:15 pm-8:45 am

1 stop34h 30m

$878

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 10/2

10:15 am-7:00 pm

1 stop42h 45m

Bangkok Suvarnabhumi

Sun 10/11

9:15 pm-8:45 am

1 stop49h 30m

$883

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/1

10:15 am-12:20 pm

1 stop36h 05m

Bangkok Suvarnabhumi

Mon 9/14

1:35 pm-8:45 am

1 stop33h 10m

$889
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/1

12:10 am-10:40 am

1 stop20h 30m

Bangkok Suvarnabhumi

Sun 9/6

1:20 am-3:15 pm

1 stop27h 55m

$890

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 8/31

6:01 pm-12:20 pm

2 stops28h 19m

Bangkok Suvarnabhumi

Wed 9/30

9:15 pm-8:45 am

1 stop25h 30m

$891

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/25

12:10 am-10:40 am

1 stop20h 30m

Bangkok Suvarnabhumi

Sun 9/6

1:20 am-3:15 pm

1 stop27h 55m

$895

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 typical price of a round-trip flight between Seattle and Bangkok Suvarnabhumi Airport?

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 $739. The month of October is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Seattle averaging around $742.

How far in advance should I book a flight from Seattle 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 $874 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 $733 on momondo.

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

As of May 2026, prices for Seattle to Bangkok Suvarnabhumi Airport flights are approximately 24% 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

22h 00m

Direct flights

None
The fastest flight from Seattle to Bangkok Suvarnabhumi Airport takes 22h 00m
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

Frequently asked questions about flying from Seattle to Bangkok Suvarnabhumi Airport

  • 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. 22h 00m 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
994 reviews
Search Philippine Airlines flights
Singapore AirlinesPriceFrom $510Free CancellationRating
8.2
1,506 reviews
Search Singapore Airlines flights
Air CanadaPriceFrom $623Free CancellationRating
7.1
10,996 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $626Free CancellationRating
8.1
530 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $652Free CancellationRating
8.4
1,216 reviews
Search Korean Air flights
ANAPriceFrom $680Free CancellationRating
8.3
1,205 reviews
Search ANA flights
DeltaPriceFrom $694Free CancellationRating
7.9
8,459 reviews
Search Delta flights
United AirlinesPriceFrom $697Free CancellationRating
7.4
9,681 reviews
Search United Airlines flights
Cathay PacificPriceFrom $705Free CancellationRating
7.6
1,313 reviews
Search Cathay Pacific flights
China AirlinesPriceFrom $724Free CancellationRating
8.3
819 reviews
Search China 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
Chonburi
Ayutthaya
Ko Lan
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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