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Cheap flights from Seattle to Bangkok from $400

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.
Asiana Airlines Logo
12:10 am - 10:40 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 30m1 stop Incheon Intl
Asiana Airlines Logo
11:55 pm - 1:55 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
29h 00m1 stop Incheon Intl
$785Asiana Airlines
Mon, Sep 21 - Wed, Jan 20
Asiana Airlines Logo
12:10 am - 11:15 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 05m1 stop Incheon Intl
Asiana Airlines Logo
12:25 pm - 1:55 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 30m1 stop Incheon Intl
$785Asiana Airlines
Fri, Dec 4 - Wed, Jan 13
Singapore Airlines Logo
8:40 am - 6:45 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
43h 05m1 stop Singapore Changi
Singapore Airlines Logo
12:00 pm - 7:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
34h 05m1 stop Singapore Changi
$786Singapore Airlines
Wed, Nov 25 - Fri, Dec 11
Singapore Airlines Logo
8:40 am - 6:45 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
43h 05m1 stop Singapore Changi
Singapore Airlines Logo
9:40 am - 7:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 25m1 stop Singapore Changi
$786Singapore Airlines
Wed, Nov 25 - Sat, Dec 5
Korean Air Logo
12:50 pm - 1:05 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 15m1 stop Incheon Intl
Korean Air Logo
2:35 am - 10:40 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 05m1 stop Incheon Intl
$788Korean Air
Wed, Sep 16 - Tue, Sep 22
Korean Air Logo
12:50 pm - 9:45 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
18h 55m1 stop Incheon Intl
Korean Air Logo
2:35 am - 10:40 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 05m1 stop Incheon Intl
$790Korean Air
Sun, Sep 20 - Wed, Sep 23
Air Canada Logo
8:15 am - 12:20 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
25h 05m2 stops Vancouver Intl Incheon Intl
Air Canada Logo
9:50 am - 6:22 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
23h 32m2 stops Incheon Intl Vancouver Intl
$803Air Canada
Thu, Dec 3 - Wed, Dec 16
Air Canada Logo
3:15 pm - 12:20 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
42h 05m2 stops Vancouver Intl Incheon Intl
Air Canada Logo
9:50 am - 2:37 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
19h 47m2 stops Incheon Intl Vancouver Intl
$803Air Canada
Wed, Dec 2 - Wed, Dec 16
Delta Logo
1:00 pm - 9:45 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
18h 45m1 stop Incheon Intl
Delta Logo
2:35 am - 1:14 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
24h 39m1 stop Incheon Intl
$813Delta
Sun, Sep 27 - Tue, Oct 13
Delta Logo
12:30 pm - 12:45 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
21h 15m1 stop Incheon Intl
Delta Logo
9:40 am - 11:51 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
17h 11m1 stop Incheon Intl
$813Delta
Tue, Nov 3 - Mon, Nov 23

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Asiana Airlines flights from Seattle to Bangkok

Our best Asiana Airlines deals on Seattle to Bangkok flight tickets
Asiana Airlines
Dec 3
SEA12:10 amSeattle/Tacoma Intl
19h 55m
1 stop
BKK11:05 amBangkok Suvarnabhumi
Mar 3
BKK11:55 pmBangkok Suvarnabhumi
29h 00m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$785
Asiana Airlines
Nov 1
SEA12:10 amSeattle/Tacoma Intl
30h 50m
1 stop
BKK10:00 pmBangkok Suvarnabhumi
Nov 26
BKK12:25 pmBangkok Suvarnabhumi
16h 30m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$787
Asiana Airlines
Oct 13
SEA12:10 amSeattle/Tacoma Intl
33h 25m
1 stop
BKK11:35 pmBangkok Suvarnabhumi
Dec 14
BKK11:55 pmBangkok Suvarnabhumi
29h 00m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$788

Korean Air flights from Seattle to Bangkok

Our best Korean Air deals on Seattle to Bangkok flight tickets
Korean Air
Sep 20
SEA12:50 pmSeattle/Tacoma Intl
18h 55m
1 stop
BKK9:45 pmBangkok Suvarnabhumi
Sep 23
BKK2:35 amBangkok Suvarnabhumi
22h 05m
1 stop
SEA10:40 amSeattle/Tacoma Intl
$790
Korean Air
Sep 17
SEA12:50 pmSeattle/Tacoma Intl
18h 55m
1 stop
BKK9:45 pmBangkok Suvarnabhumi
Sep 29
BKK2:35 amBangkok Suvarnabhumi
22h 05m
1 stop
SEA10:40 amSeattle/Tacoma Intl
$795
Korean Air
Oct 21
SEA12:50 pmSeattle/Tacoma Intl
22h 15m
1 stop
BKK1:05 amBangkok Suvarnabhumi
Oct 28
BKK9:40 pmBangkok Suvarnabhumi
26h 25m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$796

momondo Fare Finder

 
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 Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Mon 9/21

12:10 am-10:40 am

1 stop20h 30m

Bangkok Suvarnabhumi

Wed 1/20

11:55 pm-1:55 pm

1 stop29h 00m

$785
Quickest round-trip

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Fri 12/4

12:10 am-11:15 am

1 stop20h 05m

Bangkok Suvarnabhumi

Wed 1/13

12:25 pm-1:55 pm

1 stop16h 30m

$785

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 11/25

8:40 am-6:45 pm

1 stop43h 05m

Bangkok Suvarnabhumi

Fri 12/11

12:00 pm-7:05 am

1 stop34h 05m

$786

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 11/25

8:40 am-6:45 pm

1 stop43h 05m

Bangkok Suvarnabhumi

Sat 12/5

9:40 am-7:05 am

1 stop36h 25m

$786

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 9/16

12:50 pm-1:05 am

1 stop22h 15m

Bangkok Suvarnabhumi

Tue 9/22

2:35 am-10:40 am

1 stop22h 05m

$788

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 9/20

12:50 pm-9:45 pm

1 stop18h 55m

Bangkok Suvarnabhumi

Wed 9/23

2:35 am-10:40 am

1 stop22h 05m

$790

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Thu 12/3

8:15 am-12:20 am

2 stops25h 05m

Bangkok Suvarnabhumi

Wed 12/16

9:50 am-6:22 pm

2 stops23h 32m

$803

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Wed 12/2

3:15 pm-12:20 am

2 stops42h 05m

Bangkok Suvarnabhumi

Wed 12/16

9:50 am-2:37 pm

2 stops19h 47m

$803

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Sun 9/27

1:00 pm-9:45 pm

1 stop18h 45m

Bangkok Suvarnabhumi

Tue 10/13

2:35 am-1:14 pm

1 stop24h 39m

$813

SeattleBangkok

SEA Seattle/Tacoma Intl - BKK Bangkok Suvarnabhumi

SEABKK

Seattle/Tacoma Intl

Tue 11/3

12:30 pm-12:45 am

1 stop21h 15m

Bangkok Suvarnabhumi

Mon 11/23

9:40 am-11:51 am

1 stop17h 11m

$813

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $690 to $923.
The lowest price recently found on this route was $785.

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of March, then book flights to Bangkok from Seattle during February instead. Flights to Bangkok in February, while not as cheap as those in March, still average around $764.

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 $897 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 $775 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

Best Price Found

$400

Fastest flight time

18h 55m

Direct flights

None
The best one-way flight to Bangkok from Seattle in the past 72 hours is $400. The best round-trip flight deal from Seattle to Bangkok found on momondo in the last 72 hours is $785.
The fastest flight from Seattle to Bangkok takes 18h 55m
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 55m 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
1,025 reviews
Search Philippine Airlines flights
Hainan AirlinesPriceFrom $385Free CancellationRating
8.4
70 reviews
Search Hainan Airlines flights
Singapore AirlinesPriceFrom $510Free CancellationRating
8.2
1,598 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $577Free CancellationRating
7.3
3,733 reviews
Search Qatar Airways flights
Air CanadaPriceFrom $623Free CancellationRating
7.1
11,594 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $624Free CancellationRating
8.1
560 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $660Free CancellationRating
8.4
1,221 reviews
Search Korean Air flights
DeltaPriceFrom $694Free CancellationRating
7.8
8,548 reviews
Search Delta flights
ANAPriceFrom $701Free CancellationRating
8.3
1,312 reviews
Search ANA flights
United AirlinesPriceFrom $702Free CancellationRating
7.4
10,176 reviews
Search United 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

Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport