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Cheap flights from Seattle to Bangkok from $474

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 7/16. 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
1 adult, Economy, 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.
Philippine Airlines Logo
11:10 pm - 12:10 pm
SEA
-
BKK
23h 00m
1 stop
Philippine Airlines Logo
10:50 pm - 8:35 pm
BKK
-
SEA
35h 45m
1 stop
$964Philippine Airlines
Thu, Oct 8 - Sat, Oct 31
Korean Air Logo
1:05 pm - 11:35 pm
SEA
-
BKK
20h 30m
1 stop
Korean Air Logo
11:30 pm - 9:49 pm
BKK
-
SEA
36h 19m
2 stops
$966Korean Air
Fri, Jul 10 - Fri, Jul 17
Delta Logo
9:45 pm - 1:05 am
SEA
-
BKK
37h 20m
2 stops
Delta Logo
2:35 am - 9:49 pm
BKK
-
SEA
33h 14m
2 stops
$967Delta
Mon, Jul 6 - Wed, Jul 15
Multiple Airlines Logo
10:15 am - 8:00 pm
SEA
-
BKK
19h 45m
1 stop
Multiple Airlines Logo
5:30 pm - 7:15 pm
BKK
-
SEA
15h 45m
1 stop
$969Multiple Airlines
Sun, Sep 6 - Mon, Sep 21
Multiple Airlines Logo
11:00 am - 9:30 pm
SEA
-
BKK
19h 30m
1 stop
Multiple Airlines Logo
8:00 am - 1:10 pm
BKK
-
SEA
20h 10m
1 stop
$970Multiple Airlines
Mon, Nov 2 - Mon, Nov 30
Delta Logo
1:05 pm - 1:05 am
SEA
-
BKK
22h 00m
1 stop
Delta Logo
2:35 am - 1:37 pm
BKK
-
SEA
25h 02m
1 stop
$971Delta
Thu, Aug 13 - Thu, Aug 27
Delta Logo
9:39 pm - 1:05 am
SEA
-
BKK
37h 26m
2 stops
Delta Logo
2:35 am - 9:49 pm
BKK
-
SEA
33h 14m
2 stops
$972Delta
Thu, Jul 9 - Fri, Jul 17
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
$973United Airlines
Tue, Jul 7 - Tue, Oct 6
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
$974United Airlines
Tue, Jul 7 - Wed, Oct 7
Singapore Airlines Logo
8:45 am - 5:00 pm
SEA
-
BKK
41h 15m
1 stop
Singapore Airlines Logo
1:35 pm - 12:04 am
BKK
-
SEA
25h 29m
2 stops
$975Singapore Airlines
Wed, Nov 18 - Wed, Dec 9

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Qatar Airways flights from Seattle to Bangkok

Our best Qatar Airways deals on Seattle to Bangkok flight tickets
Qatar Airways
Jun 18
SEA4:25 pmSeattle/Tacoma Intl
24h 50m
1 stop
BKK7:15 amBangkok Suvarnabhumi
Jul 8
BKK8:00 pmBangkok Suvarnabhumi
30h 45m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
$1,200
Qatar Airways
Jun 17
SEA4:25 pmSeattle/Tacoma Intl
31h 00m
1 stop
BKK1:25 pmBangkok Suvarnabhumi
Jul 5
BKK2:30 amBangkok Suvarnabhumi
23h 55m
1 stop
SEA12:25 pmSeattle/Tacoma Intl
$1,201
Qatar Airways
Jun 17
SEA4:25 pmSeattle/Tacoma Intl
24h 50m
1 stop
BKK7:15 amBangkok Suvarnabhumi
Jul 6
BKK8:00 pmBangkok Suvarnabhumi
30h 45m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
$1,203

Korean Air flights from Seattle to Bangkok

Our best Korean Air deals on Seattle to Bangkok flight tickets
Korean Air
Jul 10
SEA1:05 pmSeattle/Tacoma Intl
20h 30m
1 stop
BKK11:35 pmBangkok Suvarnabhumi
Jul 17
BKK2:35 amBangkok Suvarnabhumi
33h 14m
2 stops
SEA9:49 pmSeattle/Tacoma Intl
$966
Korean Air
Aug 23
SEA1:20 pmSeattle/Tacoma Intl
18h 25m
1 stop
BKK9:45 pmBangkok Suvarnabhumi
Aug 29
BKK2:35 amBangkok Suvarnabhumi
22h 25m
1 stop
SEA11:00 amSeattle/Tacoma Intl
$974
Korean Air
Aug 5
SEA7:20 amSeattle/Tacoma Intl
27h 45m
2 stops
BKK1:05 amBangkok Suvarnabhumi
Aug 18
BKK2:35 amBangkok Suvarnabhumi
33h 24m
2 stops
SEA9:59 pmSeattle/Tacoma Intl
$986

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 June 16, 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

Thu 10/8

11:10 pm-12:10 pm

1 stop23h 00m

Bangkok Suvarnabhumi

Sat 10/31

10:50 pm-8:35 pm

1 stop35h 45m

$964

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Fri 7/10

1:05 pm-11:35 pm

1 stop20h 30m

Bangkok Suvarnabhumi

Fri 7/17

11:30 pm-9:49 pm

2 stops36h 19m

$966

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 7/6

9:45 pm-1:05 am

2 stops37h 20m

Bangkok Suvarnabhumi

Wed 7/15

2:35 am-9:49 pm

2 stops33h 14m

$967
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 9/6

10:15 am-8:00 pm

1 stop19h 45m

Bangkok Suvarnabhumi

Mon 9/21

5:30 pm-7:15 pm

1 stop15h 45m

$969

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 11/2

11:00 am-9:30 pm

1 stop19h 30m

Bangkok Suvarnabhumi

Mon 11/30

8:00 am-1:10 pm

1 stop20h 10m

$970

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 8/13

1:05 pm-1:05 am

1 stop22h 00m

Bangkok Suvarnabhumi

Thu 8/27

2:35 am-1:37 pm

1 stop25h 02m

$971

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Thu 7/9

9:39 pm-1:05 am

2 stops37h 26m

Bangkok Suvarnabhumi

Fri 7/17

2:35 am-9:49 pm

2 stops33h 14m

$972

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 7/7

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 10/6

9:35 am-2:25 pm

1 stop18h 50m

$973

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 7/7

4:30 pm-4:35 am

1 stop22h 05m

Bangkok Suvarnabhumi

Wed 10/7

9:35 am-2:25 pm

1 stop18h 50m

$974

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Wed 11/18

8:45 am-5:00 pm

1 stop41h 15m

Bangkok Suvarnabhumi

Wed 12/9

1:35 pm-12:04 am

2 stops25h 29m

$975

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 $877 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 $713 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

18h 40m

Direct flights

None
The fastest flight from Seattle to Bangkok takes 18h 40m
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. 18h 40m 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 $149Free CancellationRating
7.3
1,000 reviews
Search Philippine Airlines flights
Hainan AirlinesPriceFrom $385Free CancellationRating
8.3
66 reviews
Search Hainan Airlines flights
Singapore AirlinesPriceFrom $510Free CancellationRating
8.2
1,545 reviews
Search Singapore Airlines flights
Air CanadaPriceFrom $623Free CancellationRating
7.1
11,197 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $625Free CancellationRating
8.1
541 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $653Free CancellationRating
8.4
1,218 reviews
Search Korean Air flights
ANAPriceFrom $680Free CancellationRating
8.3
1,236 reviews
Search ANA flights
DeltaPriceFrom $694Free CancellationRating
7.9
8,403 reviews
Search Delta flights
United AirlinesPriceFrom $697Free CancellationRating
7.4
9,841 reviews
Search United Airlines flights
Cathay PacificPriceFrom $705Free CancellationRating
7.6
1,380 reviews
Search Cathay Pacific 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