Cheap Flights from Seattle, WA to Bangkok from $352

Return flight: Bangkok – Seattle

On Cheapflightsplus.com you will find 271 connecting flights from Seattle to Bangkok. You can compare airfare deals from 24 airlines and multiple travel sites from $352, book and save on cheap plane tickets and last minute offers. Also check out SEA-BKK flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Bangkok depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Bangkok is 11989 miles. Time difference between the cities is 3h. Airplanes depart 01:10 to 23:30 from 3 Seattle airports and arrive 01:10 to 23:30 to 2 Bangkok airports. Average flight time is 29h 10m.

  • The fastest flight 18h 5m
  • Average flight time 29h 10m
  • The earliest flight 01:10
  • The latest flight 23:30
  • Distance 7450 ml

The cheapest months to travel to Bangkok are august (from 352 $), october (from 394 $), july (from 417 $).

The most expensive months are december (from 779 $), june (from 632 $), may (from 609 $).

What is the lowest airfare Seattle to Bangkok?

The cheapest plane ticket found by our users is $352. This airfare is for economy class on one-way OZ271 flight by Asiana Airlines for August 19, 2025 which leaves Seattle-Tacoma Intl in Seattle at 14:30 am and arrives at Bangkok Suvarnabhumi at 23:10.

Economy class
$352
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Business class
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First class
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Flight Schedule Seattle (Washington) to Bangkok

01:15 — 12:00+1day
20h 45m flight time
Find flight
from$394
00:05 — 05:15 Seattle — Taipei
JX31 Jambojet
4h 35m stop
09:25 — 12:35 Taipei — Bangkok
JX741 Jambojet
01:15 — 16:40+1day
25h 25m flight time
Find flight
from$394
00:05 — 05:15 Seattle — Taipei
JX31 Jambojet
9h 25m stop
13:30 — 16:30 Taipei — Bangkok
JX745 Jambojet
01:40 — 09:45+1day
18h 5m flight time
Find flight
from$415
01:10 — 05:05 Seattle — Taipei
CI21 China Airlines
1h 55m stop
07:00 — 09:45 Taipei — Bangkok
CI833 China Airlines
01:40 — 12:10+1day
20h 30m flight time
Find flight
from$415
00:10 — 05:20 Seattle — Taipei
CI21 China Airlines
4h 20m stop
10:05 — 13:05 Taipei — Bangkok
CI831 China Airlines
01:40 — 16:20+1day
24h 40m flight time
Find flight
from$415
00:10 — 05:20 Seattle — Taipei
CI21 China Airlines
8h 25m stop
13:50 — 16:45 Taipei — Bangkok
CI835 China Airlines
01:40 — 01:25+2days
33h 45m flight time
Find flight
from$415
00:10 — 05:20 Seattle — Taipei
CI21 China Airlines
17h 35m stop
22:30 — 01:35 Taipei — Bangkok
CI837 China Airlines
10:15 — 20:00+1day
19h 45m flight time
Find flight
from$377
10:15 — 17:35 Seattle — Singapore
SQ27 Singapore Airlines
55m stop
18:30 — 20:00 Singapore — Bangkok
SQ720 Singapore Airlines
10:15 — 08:15+2days
32h flight time
Find flight
from$377
10:15 — 17:35 Seattle — Singapore
SQ27 Singapore Airlines
13h 15m stop
06:50 — 08:15 Singapore — Bangkok
SQ706 Singapore Airlines
10:15 — 11:00+2days
34h 45m flight time
Find flight
from$377
10:15 — 17:35 Seattle — Singapore
SQ27 Singapore Airlines
15h 55m stop
09:30 — 11:00 Singapore — Bangkok
SQ708 Singapore Airlines
10:15 — 14:20+2days
38h 5m flight time
Find flight
from$377
10:15 — 17:35 Seattle — Singapore
SQ27 Singapore Airlines
19h 15m stop
12:50 — 14:20 Singapore — Bangkok
SQ710 Singapore Airlines
10:15 — 17:25+2days
41h 10m flight time
Find flight
from$377
10:15 — 17:35 Seattle — Singapore
SQ27 Singapore Airlines
22h 25m stop
16:00 — 17:25 Singapore — Bangkok
SQ712 Singapore Airlines
10:15 — 19:00+2days
42h 45m flight time
Find flight
from$377
10:15 — 17:35 Seattle — Singapore
SQ27 Singapore Airlines
23h 55m stop
17:30 — 19:00 Singapore — Bangkok
SQ714 Singapore Airlines
14:30 — 23:10+2days
18h 40m flight time
Find flight
from$352
14:15 — 17:55 Seattle — Seoul
OZ271 Asiana Airlines
1h 35m stop
19:30 — 23:10 Seoul — Bangkok
OZ741 Asiana Airlines
16:30 — 06:00+2days
23h 30m flight time
Find flight
from$415
15:45 — 19:15 Seattle — Tokyo
NH117 All Nippon Airways
6h 30m stop
01:30 — 06:35 Tokyo — Bangkok
NH877 All Nippon Airways
16:30 — 15:30+2days
33h flight time
Find flight
from$415
15:40 — 19:15 Seattle — Tokyo
NH117 All Nippon Airways
15h 50m stop
11:05 — 16:20 Tokyo — Bangkok
NH847 All Nippon Airways
Full flight schedule will help you in detecting at what time planes fly from Seattle to Bangkok. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 20, 2025.

Popular Airlines on the Route

The flight Seattle — Bangkok is served by 24 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Qatar Airways - 6 departures per week at the price of from $ 431 . And the most expensive tickets are offered by Malaysia Airlines airline - from $ 8828.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 271 flights with layovers on the route. The fastest connecting flight is CI21 by China Airlines takes 18h 5m and the cheapest is OZ271 by Asiana Airlines for $352.

  • QR - Qatar Airways
    from $431
    Find
  • DE - Condor Airlines
    from $1118
    Find
  • KL - KLM
    from $1171
    Find
  • JL - Japan Airlines - JAL
    from $436
    Find
  • AC - Air Canada
    from $597
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  • AF - Air France
    from $1189
    Find
  • CI - China Airlines
    from $415
    Find
  • EK - Emirates
    from $992
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  • OZ - Asiana Airlines
    from $352
    Find
  • UA - United Airlines
    from $445
    Find
  • LX - SWISS International Air Lines
    from $5242
    Find
  • HU - Hainan Airlines
    from $551
    Find
See more connecting flights

Airports

You can fly from Seattle to Bangkok from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
    from $352
    Find
  • Kenmore Air Harbor SPB-LKE
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Bangkok airports

  • Suvarnabhumi-BKK
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  • Don Muang-DMK
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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