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Cheap flights from Seattle to Bangkok from $330

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 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
China Eastern Logo
7:00 am - 9:55 pm
SEA
-
BKK
24h 55m
2 stops
China Eastern Logo
5:05 am - 4:53 pm
BKK
-
SEA
25h 48m
2 stops
$790China Eastern
Mon, May 4 - Tue, May 26
Asiana Airlines Logo
12:55 am - 10:40 am
SEA
-
BKK
19h 45m
1 stop
Asiana Airlines Logo
1:20 am - 2:55 pm
BKK
-
SEA
27h 35m
1 stop
$809Asiana Airlines
Sun, Apr 26 - Sun, Jun 21
Asiana Airlines Logo
12:55 am - 10:40 am
SEA
-
BKK
19h 45m
1 stop
Asiana Airlines Logo
11:45 am - 2:55 pm
BKK
-
SEA
17h 10m
1 stop
$813Asiana Airlines
Mon, May 4 - Tue, Jun 9
Asiana Airlines Logo
12:55 am - 11:20 pm
SEA
-
BKK
32h 25m
1 stop
Asiana Airlines Logo
1:20 am - 2:55 pm
BKK
-
SEA
27h 35m
1 stop
$817Asiana Airlines
Sun, Apr 26 - Sun, Jun 21
Hainan Airlines Logo
11:00 am - 11:00 pm
SEA
-
BKK
22h 00m
1 stop
Hainan Airlines Logo
12:40 am - 9:00 am
BKK
-
SEA
22h 20m
1 stop
$823Hainan Airlines
Tue, Apr 28 - Fri, May 8
China Airlines Logo
1:15 am - 4:20 pm
SEA
-
BKK
25h 05m
1 stop
China Airlines Logo
2:40 am - 7:45 pm
BKK
-
SEA
31h 05m
1 stop
$833China Airlines
Sun, Apr 12 - Sun, Aug 30
Hainan Airlines Logo
11:00 am - 11:00 pm
SEA
-
BKK
22h 00m
1 stop
Hainan Airlines Logo
12:40 am - 9:00 am
BKK
-
SEA
22h 20m
1 stop
$845Hainan Airlines
Tue, Apr 21 - Fri, May 8
Singapore Airlines Logo
10:15 am - 11:00 am
SEA
-
BKK
34h 45m
1 stop
Singapore Airlines Logo
3:30 pm - 8:57 am
BKK
-
SEA
31h 27m
2 stops
$850Singapore Airlines
Sat, May 9 - Tue, May 19
Multiple Airlines Logo
1:15 am - 5:35 pm
SEA
-
DMK
26h 20m
2 stops
Multiple Airlines Logo
1:40 pm - 7:15 pm
DMK
-
SEA
19h 35m
2 stops
$1,130Multiple Airlines
Sun, Apr 26 - Tue, May 12
Multiple Airlines Logo
12:55 am - 10:40 pm
SEA
-
DMK
31h 45m
2 stops
Multiple Airlines Logo
6:25 pm - 10:40 am
DMK
-
SEA
30h 15m
2 stops
$1,140Multiple Airlines
Tue, Apr 28 - Sat, May 9

Singapore Airlines flights from Seattle to Bangkok

Our best Singapore Airlines deals on Seattle to Bangkok flight tickets
Singapore Airlines
Sep 30
SEA7:07 pmSeattle/Tacoma Intl
25h 53m
2 stops
BKK11:00 amBangkok Suvarnabhumi
Oct 10
BKK1:35 pmBangkok Suvarnabhumi
33h 10m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$667
Singapore Airlines
Sep 30
SEA7:07 pmSeattle/Tacoma Intl
25h 53m
2 stops
BKK11:00 amBangkok Suvarnabhumi
Oct 10
BKK8:15 pmBangkok Suvarnabhumi
26h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$677
Singapore Airlines
Aug 25
SEA10:15 amSeattle/Tacoma Intl
41h 00m
1 stop
BKK5:15 pmBangkok Suvarnabhumi
Sep 14
BKK9:20 amBangkok Suvarnabhumi
37h 25m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$684

China Eastern flights from Seattle to Bangkok

Our best China Eastern deals on Seattle to Bangkok flight tickets
China Eastern
May 4
SEA7:00 amSeattle/Tacoma Intl
24h 55m
2 stops
BKK9:55 pmBangkok Suvarnabhumi
May 26
BKK5:05 amBangkok Suvarnabhumi
25h 48m
2 stops
SEA4:53 pmSeattle/Tacoma Intl
$790
China Eastern
Aug 25
SEA7:20 amSeattle/Tacoma Intl
27h 20m
2 stops
BKK12:40 amBangkok Suvarnabhumi
Sep 14
BKK5:05 amBangkok Suvarnabhumi
25h 50m
2 stops
SEA4:55 pmSeattle/Tacoma Intl
$802
China Eastern
Apr 9
SEA7:15 amSeattle/Tacoma Intl
28h 40m
2 stops
BKK1:55 amBangkok Suvarnabhumi
May 1
BKK2:10 amBangkok Suvarnabhumi
30h 16m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$940

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 April 3, 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

Mon 5/4

7:00 am-9:55 pm

2 stops24h 55m

Bangkok Suvarnabhumi

Tue 5/26

5:05 am-4:53 pm

2 stops25h 48m

$790

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/26

12:55 am-10:40 am

1 stop19h 45m

Bangkok Suvarnabhumi

Sun 6/21

1:20 am-2:55 pm

1 stop27h 35m

$809
Quickest round-trip

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Mon 5/4

12:55 am-10:40 am

1 stop19h 45m

Bangkok Suvarnabhumi

Tue 6/9

11:45 am-2:55 pm

1 stop17h 10m

$813

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/26

12:55 am-11:20 pm

1 stop32h 25m

Bangkok Suvarnabhumi

Sun 6/21

1:20 am-2:55 pm

1 stop27h 35m

$817

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 4/28

11:00 am-11:00 pm

1 stop22h 00m

Bangkok Suvarnabhumi

Fri 5/8

12:40 am-9:00 am

1 stop22h 20m

$823

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sun 4/12

1:15 am-4:20 pm

1 stop25h 05m

Bangkok Suvarnabhumi

Sun 8/30

2:40 am-7:45 pm

1 stop31h 05m

$833

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Tue 4/21

11:00 am-11:00 pm

1 stop22h 00m

Bangkok Suvarnabhumi

Fri 5/8

12:40 am-9:00 am

1 stop22h 20m

$845

SeattleBangkok

SEA - BKK

SEABKK

Seattle/Tacoma Intl

Sat 5/9

10:15 am-11:00 am

1 stop34h 45m

Bangkok Suvarnabhumi

Tue 5/19

3:30 pm-8:57 am

2 stops31h 27m

$850

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 4/26

1:15 am-5:35 pm

2 stops26h 20m

Bangkok Don Mueang Intl

Tue 5/12

1:40 pm-7:15 pm

2 stops19h 35m

$1,130

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Tue 4/28

12:55 am-10:40 pm

2 stops31h 45m

Bangkok Don Mueang Intl

Sat 5/9

6:25 pm-10:40 am

2 stops30h 15m

$1,140

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 September, then book flights to Bangkok from Seattle during February instead. Flights to Bangkok in February, while not as cheap as those in September, still average around $751.

How far in advance should I book a flight 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 $870 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 $724 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

20h 20m

Direct flights

None
The fastest flight from Seattle to Bangkok takes 20h 20m
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. 20h 20m 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
979 reviews
Search Philippine Airlines flights
Singapore AirlinesPriceFrom $511Free CancellationRating
8.2
1,487 reviews
Search Singapore Airlines flights
Air CanadaPriceFrom $623Free CancellationRating
7.1
10,886 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $627Free CancellationRating
8.1
509 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $656Free CancellationRating
8.4
1,203 reviews
Search Korean Air flights
ANAPriceFrom $680Free CancellationRating
8.4
1,163 reviews
Search ANA flights
DeltaPriceFrom $694Free CancellationRating
7.9
8,374 reviews
Search Delta flights
United AirlinesPriceFrom $700Free CancellationRating
7.4
9,538 reviews
Search United Airlines flights
Cathay PacificPriceFrom $704Free CancellationRating
7.6
1,239 reviews
Search Cathay Pacific flights
China AirlinesPriceFrom $714Free CancellationRating
8.3
815 reviews
Search China 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