Cheap flights from Seattle to Bangkok from $397

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 1/26. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:10 am - 11:10 pmSEA-DMK
32h 00m2 stops
Multiple Airlines Logo
7:30 am - 6:10 pmDMK-SEA
25h 40m2 stops
$851Multiple Airlines
Find Deal
Sun, Jan 11 - Mon, Jan 26
Multiple Airlines Logo
12:10 am - 7:45 pmSEA-DMK
28h 35m2 stops
Multiple Airlines Logo
7:30 am - 6:10 pmDMK-SEA
25h 40m2 stops
$852Multiple Airlines
Find Deal
Sun, Jan 11 - Sat, Jan 24
Multiple Airlines Logo
12:10 am - 11:10 pmSEA-DMK
32h 00m2 stops
Multiple Airlines Logo
7:30 am - 6:10 pmDMK-SEA
25h 40m2 stops
$855Multiple Airlines
Find Deal
Mon, Jan 19 - Tue, Feb 3
Multiple Airlines Logo
12:10 am - 9:30 pmSEA-DMK
31h 20m2 stops
Multiple Airlines Logo
3:00 am - 2:55 pmDMK-SEA
25h 55m2 stops
$860Multiple Airlines
Find Deal
Wed, Mar 18 - Sun, Mar 29
Multiple Airlines Logo
1:10 am - 7:30 pmSEA-DMK
28h 20m1 stop
Multiple Airlines Logo
7:25 am - 7:30 pmDMK-SEA
26h 05m1 stop
$868Multiple Airlines
Find Deal
Thu, Mar 19 - Sun, Mar 29
Multiple Airlines Logo
12:10 am - 11:10 pmSEA-DMK
32h 00m2 stops
Multiple Airlines Logo
7:30 am - 6:10 pmDMK-SEA
25h 40m2 stops
$874Multiple Airlines
Find Deal
Sat, Jan 24 - Mon, Feb 2
Multiple Airlines Logo
1:10 am - 11:10 pmSEA-DMK
32h 00m2 stops
Multiple Airlines Logo
7:30 am - 7:10 pmDMK-SEA
25h 40m2 stops
$887Multiple Airlines
Find Deal
Thu, Mar 19 - Sat, Mar 28
Multiple Airlines Logo
12:10 am - 7:50 pmSEA-DMK
28h 40m1 stop
Multiple Airlines Logo
7:45 am - 6:10 pmDMK-SEA
25h 25m1 stop
$891Multiple Airlines
Find Deal
Sat, Jan 24 - Mon, Feb 2
Multiple Airlines Logo
12:10 am - 4:15 pmSEA-DMK
26h 05m2 stops
Multiple Airlines Logo
9:20 am - 7:40 pmDMK-SEA
24h 20m2 stops
$899Multiple Airlines
Find Deal
Wed, Mar 11 - Wed, Mar 25
Multiple Airlines Logo
1:10 am - 7:30 pmSEA-DMK
28h 20m1 stop
Multiple Airlines Logo
7:45 am - 7:10 pmDMK-SEA
25h 25m1 stop
$909Multiple Airlines
Find Deal
Thu, Mar 12 - Sat, Mar 28

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bangkok Don Mueang Intl 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 November 30, 2025.
Use the filters below to find and compare flights from Seattle to Bangkok Don Mueang Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 1/11

12:10 am-11:10 pm

2 stops32h 00m

Bangkok Don Mueang Intl

Mon 1/26

7:30 am-6:10 pm

2 stops25h 40m

$851

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sun 1/11

12:10 am-7:45 pm

2 stops28h 35m

Bangkok Don Mueang Intl

Sat 1/24

7:30 am-6:10 pm

2 stops25h 40m

$852

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Mon 1/19

12:10 am-11:10 pm

2 stops32h 00m

Bangkok Don Mueang Intl

Tue 2/3

7:30 am-6:10 pm

2 stops25h 40m

$855

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Wed 3/18

12:10 am-9:30 pm

2 stops31h 20m

Bangkok Don Mueang Intl

Sun 3/29

3:00 am-2:55 pm

2 stops25h 55m

$860

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Thu 3/19

1:10 am-7:30 pm

1 stop28h 20m

Bangkok Don Mueang Intl

Sun 3/29

7:25 am-7:30 pm

1 stop26h 05m

$868

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sat 1/24

12:10 am-11:10 pm

2 stops32h 00m

Bangkok Don Mueang Intl

Mon 2/2

7:30 am-6:10 pm

2 stops25h 40m

$874

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Thu 3/19

1:10 am-11:10 pm

2 stops32h 00m

Bangkok Don Mueang Intl

Sat 3/28

7:30 am-7:10 pm

2 stops25h 40m

$887

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Sat 1/24

12:10 am-7:50 pm

1 stop28h 40m

Bangkok Don Mueang Intl

Mon 2/2

7:45 am-6:10 pm

1 stop25h 25m

$891

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Wed 3/11

12:10 am-4:15 pm

2 stops26h 05m

Bangkok Don Mueang Intl

Wed 3/25

9:20 am-7:40 pm

2 stops24h 20m

$899

SeattleBangkok

SEA - DMK

SEADMK

Seattle/Tacoma Intl

Thu 3/12

1:10 am-7:30 pm

1 stop28h 20m

Bangkok Don Mueang Intl

Sat 3/28

7:45 am-7:10 pm

1 stop25h 25m

$909

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 Don Mueang Intl 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 cheapest day to depart on your flight to Bangkok Don Mueang Intl Airport?

The cheapest day to depart from Seattle to Bangkok Don Mueang Intl Airport is on a Tuesday. Travelers who choose to depart for Bangkok Don Mueang Intl Airport on a Tuesday will often find tickets for as low as $827. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,293. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bangkok Don Mueang Intl Airport.

What is the cheapest time of day to depart on your flight to Bangkok Don Mueang Intl Airport?

Flying to Bangkok Don Mueang Intl Airport from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $928 when looking at flights departing in the evening. Flights at noon are often more expensive with an average ticket price of $1,293.

When to book flights from Seattle to Bangkok Don Mueang Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bangkok Don Mueang Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bangkok Don Mueang Intl Airport (SEA to DMK) flight deals and tips

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

Fastest flight time

20h 45m

Direct flights

None
The fastest flight from Seattle to Bangkok Don Mueang Intl Airport takes 20h 45m
There are no direct flights from Seattle to Bangkok Don Mueang Intl Airport. There are no popular flight routes from Seattle to Bangkok Don Mueang Intl Airport.
  • How far is Seattle/Tacoma Intl to Bangkok Don Mueang Intl by plane?

    There are 7425.2 mi between Seattle/Tacoma Intl and Bangkok Don Mueang Intl. Typically, this will take 21h 00m by plane in normal conditions.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Bangkok Don Mueang Intl Airport refresh daily.

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

  • What documentation or ID do you need to fly to Bangkok Don Mueang Intl Airport?

    The necessary travel and health documents for your Bangkok Don Mueang Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to Bangkok from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bangkok quick and easy, saving you time and money.

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 offers price alerts on flights to Bangkok from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Tue 12/30
Tue 1/6

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