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Cheap flights from Seattle to Bangkok from $450

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 8/12. 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.
ANA Logo
4:30 pm - 3:30 pm
SEA
-
BKK
33h 00m
1 stop
ANA Logo
9:35 am - 2:25 pm
BKK
-
SEA
18h 50m
1 stop
$962ANA
Wed, Aug 26 - Mon, Sep 7
ANA Logo
4:30 pm - 4:35 am
SEA
-
BKK
22h 05m
1 stop
ANA Logo
9:35 pm - 2:25 pm
BKK
-
SEA
30h 50m
1 stop
$964ANA
Tue, Aug 4 - Tue, Aug 25
ANA Logo
4:30 pm - 5:55 am
SEA
-
BKK
23h 25m
1 stop
ANA Logo
9:35 am - 2:25 pm
BKK
-
SEA
18h 50m
1 stop
$965ANA
Mon, Jul 13 - Wed, Jul 29
Multiple Airlines Logo
11:00 am - 11:25 pm
SEA
-
BKK
22h 25m
1 stop
Multiple Airlines Logo
5:40 pm - 4:05 pm
BKK
-
SEA
36h 25m
1 stop
$967Multiple Airlines
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
11:00 am - 11:00 pm
SEA
-
BKK
22h 00m
1 stop
Multiple Airlines Logo
1:10 pm - 4:10 pm
BKK
-
SEA
17h 00m
1 stop
$968Multiple Airlines
Sat, Sep 5 - Sun, Sep 13
Singapore Airlines Logo
7:10 pm - 12:20 pm
SEA
-
BKK
27h 10m
2 stops
Singapore Airlines Logo
8:15 pm - 8:45 am
BKK
-
SEA
50h 30m
1 stop
$969Singapore Airlines
Mon, Sep 28 - Sun, Oct 11
ANA Logo
4:30 pm - 3:30 pm
SEA
-
BKK
33h 00m
1 stop
ANA Logo
10:25 pm - 1:20 pm
BKK
-
SEA
29h 55m
1 stop
$970ANA
Tue, Sep 29 - Sun, Nov 8
United Airlines Logo
4:30 pm - 4:35 am
SEA
-
BKK
22h 05m
1 stop
United Airlines Logo
9:35 am - 2:25 pm
BKK
-
SEA
18h 50m
1 stop
$972United Airlines
Mon, Sep 7 - Thu, Oct 15
United Airlines Logo
4:30 pm - 4:35 am
SEA
-
BKK
22h 05m
1 stop
United Airlines Logo
9:10 am - 2:20 pm
BKK
-
SEA
19h 10m
1 stop
$973United Airlines
Thu, Oct 15 - Wed, Oct 28
Emirates Logo
4:05 pm - 10:00 am
SEA
-
DMK
26h 55m
1 stop
Emirates Logo
11:00 am - 12:35 pm
DMK
-
SEA
40h 35m
1 stop
$1,253Emirates
Mon, Nov 2 - Wed, Nov 11

STARLUX Airlines flights from Seattle to Bangkok

Our best STARLUX Airlines deals on Seattle to Bangkok flight tickets
STARLUX Airlines
Aug 14
SEA1:15 amSeattle/Tacoma Intl
20h 45m
1 stop
BKK12:00 pmBangkok Suvarnabhumi
Sep 15
BKK1:10 pmBangkok Suvarnabhumi
17h 00m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$1,032
STARLUX Airlines
Aug 14
SEA1:15 amSeattle/Tacoma Intl
20h 45m
1 stop
BKK12:00 pmBangkok Suvarnabhumi
Sep 14
BKK1:10 pmBangkok Suvarnabhumi
17h 00m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
$1,033

ANA flights from Seattle to Bangkok

Our best ANA deals on Seattle to Bangkok flight tickets
ANA
Aug 4
SEA4:30 pmSeattle/Tacoma Intl
22h 05m
1 stop
BKK4:35 amBangkok Suvarnabhumi
Aug 25
BKK9:35 pmBangkok Suvarnabhumi
30h 50m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$964
ANA
Jul 13
SEA4:30 pmSeattle/Tacoma Intl
23h 25m
1 stop
BKK5:55 amBangkok Suvarnabhumi
Jul 29
BKK9:35 amBangkok Suvarnabhumi
18h 50m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$965
ANA
Aug 5
SEA4:30 pmSeattle/Tacoma Intl
22h 05m
1 stop
BKK4:35 amBangkok Suvarnabhumi
Aug 19
BKK9:35 amBangkok Suvarnabhumi
18h 50m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$971

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bangkok 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 22, 2026.
Use the filters below to find and compare flights from Seattle to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 8/26

4:30 pm-3:30 pm

1 stop33h 00m

Bangkok Suvarnabhumi

Mon 9/7

9:35 am-2:25 pm

1 stop18h 50m

$962

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 8/4

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 8/25

9:35 pm-2:25 pm

1 stop30h 50m

$964

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 7/13

4:30 pm-5:55 am

1 stop23h 25m

Bangkok Suvarnabhumi

Wed 7/29

9:35 am-2:25 pm

1 stop18h 50m

$965

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 10/24

11:00 am-11:25 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Sat 10/31

5:40 pm-4:05 pm

1 stop36h 25m

$967
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 9/5

11:00 am-11:00 pm

1 stop22h 00m

Bangkok Suvarnabhumi

Sun 9/13

1:10 pm-4:10 pm

1 stop17h 00m

$968

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/28

7:10 pm-12:20 pm

2 stops27h 10m

Bangkok Suvarnabhumi

Sun 10/11

8:15 pm-8:45 am

1 stop50h 30m

$969

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 9/29

4:30 pm-3:30 pm

1 stop33h 00m

Bangkok Suvarnabhumi

Sun 11/8

10:25 pm-1:20 pm

1 stop29h 55m

$970

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 9/7

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Thu 10/15

9:35 am-2:25 pm

1 stop18h 50m

$972

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 10/15

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 10/28

9:10 am-2:20 pm

1 stop19h 10m

$973

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Mon 11/2

4:05 pm-10:00 am

1 stop26h 55m

Bangkok Don Mueang Intl

Wed 11/11

11:00 am-12:35 pm

1 stop40h 35m

$1,253

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

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?

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of April, then book flights to Bangkok from Seattle during May instead. Flights to Bangkok in May, while not as cheap as those in April, still average around $507.

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

You are more likely to see cheaper flights to Bangkok from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $867 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Seattle for as low as $730 on momondo.

Cheap Seattle to Bangkok flight deals and tips

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

Fastest flight time

19h 45m

Direct flights

None
The fastest flight from Seattle to Bangkok takes 19h 45m
There are no direct flights from Seattle to Bangkok. There are no popular flight routes from Seattle to Bangkok.
Search flight deals

Frequently asked questions about flying from Seattle to Bangkok

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

    A flight from Seattle/Tacoma Intl to Bangkok will travel around 7436.9 mi. 19h 45m is a normal flight duration for this route.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Bangkok were last updated today.

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

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

    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 Bangkok.

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

    The required travel and health documents for your Bangkok 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 Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Seattle to Bangkok

Compare and see reviews for airlines that fly from Seattle to Bangkok with momondo
Airline
Rating
Free Cancellation
Price
Philippine AirlinesPriceFrom $154Free CancellationRating
7.3
998 reviews
Search Philippine Airlines flights
Singapore AirlinesPriceFrom $510Free CancellationRating
8.2
1,522 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $626Free CancellationRating
8.1
534 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $652Free CancellationRating
8.4
1,217 reviews
Search Korean Air flights
ANAPriceFrom $680Free CancellationRating
8.3
1,212 reviews
Search ANA flights
DeltaPriceFrom $694Free CancellationRating
7.9
8,445 reviews
Search Delta flights
United AirlinesPriceFrom $697Free CancellationRating
7.4
9,752 reviews
Search United Airlines flights
Cathay PacificPriceFrom $705Free CancellationRating
7.6
1,342 reviews
Search Cathay Pacific flights
China AirlinesPriceFrom $729Free CancellationRating
8.3
826 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $745Free CancellationRating
8.9
318 reviews
Search STARLUX Airlines flights

Why use momondo?

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

It is quick and easy to find Seattle to Bangkok flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bangkok that suits you.

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

Flights from Seattle to Bangkok 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 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?

Yes. momondo can track prices for Seattle to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport