Cheap Flights from Seattle, WA to Bangkok from $297

Return flight: Bangkok – Seattle

On Cheapflightsplus.com you will find 840 connecting flights from Seattle to Bangkok. You can compare airfare deals from 22 airlines and multiple travel sites from $297, 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.

Find One-Way and Round-Trip Seattle to Bangkok Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $297 (one-way), $509 (round-trip).
Direct flights
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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 Arrival Flight Details Flight Duration Price
01:15 — 16:40
+1 day
00:05 — 05:15 JX31 Jambojet
Seattle — Taipei
8h 55m stop
13:30 — 16:30 JX745 Jambojet
Taipei — Bangkok
25h 25m
including layover
Find flight
from$310
01:15 — 12:00
+1 day
00:05 — 05:15 JX31 Jambojet
Seattle — Taipei
4h 5m stop
09:25 — 12:35 JX741 Jambojet
Taipei — Bangkok
20h 45m
including layover
Find flight
from$311
02:10 — 23:30
+2 days
00:10 — 05:20 BR25 EVA Airways Corporation
Seattle — Taipei
15h 35m stop
20:45 — 23:40 BR205 EVA Airways Corporation
Taipei — Bangkok
31h 20m
including layover
Find flight
from$371
02:10 — 01:10
+2 days
00:10 — 05:20 BR25 EVA Airways Corporation
Seattle — Taipei
17h 20m stop
22:30 — 01:25 BR61 EVA Airways Corporation
Taipei — Bangkok
33h
including layover
Find flight
from$371
10:15 — 20:00
+1 day
10:15 — 17:35 SQ27 Singapore Airlines
Seattle — Singapore
55m stop
18:30 — 20:00 SQ720 Singapore Airlines
Singapore — Bangkok
19h 45m
including layover
Find flight
from$297
10:15 — 08:15
+2 days
10:15 — 17:35 SQ27 Singapore Airlines
Seattle — Singapore
13h 15m stop
06:50 — 08:15 SQ706 Singapore Airlines
Singapore — Bangkok
32h
including layover
Find flight
from$297
12:55 — 21:45
+1 day
12:40 — 16:30 KE5020 Korean Air
Seattle — Seoul
1h 35m stop
18:05 — 21:45 KE651 Korean Air
Seoul — Bangkok
18h 50m
including layover
Find flight
from$414
12:55 — 23:25
+2 days
12:40 — 16:30 KE5020 Korean Air
Seattle — Seoul
3h 15m stop
19:45 — 23:40 KE659 Korean Air
Seoul — Bangkok
20h 30m
including layover
Find flight
from$414
13:20 — 21:45
+1 day
11:00 — 15:55 KE42 Korean Air
Seattle — Seoul
1h 25m stop
17:20 — 21:30 KE651 Korean Air
Seoul — Bangkok
18h 25m
including layover
Find flight
from$328
13:20 — 23:25
+2 days
11:00 — 15:55 KE42 Korean Air
Seattle — Seoul
3h 5m stop
20:35 — 00:45 KE659 Korean Air
Seoul — Bangkok
20h 5m
including layover
Find flight
from$328
14:30 — 23:10
+2 days
14:15 — 17:55 OZ271 Asiana Airlines
Seattle — Seoul
1h 35m stop
19:30 — 23:10 OZ741 Asiana Airlines
Seoul — Bangkok
18h 40m
including layover
Find flight
from$332
14:30 — 10:55
+2 days
14:15 — 17:55 OZ271 Asiana Airlines
Seattle — Seoul
13h 25m stop
07:20 — 10:55 OZ743 Asiana Airlines
Seoul — Bangkok
30h 25m
including layover
Find flight
from$332
16:30 — 06:00
+2 days
15:45 — 19:15 NH117 All Nippon Airways
Seattle — Tokyo
6h 30m stop
01:30 — 06:35 NH877 All Nippon Airways
Tokyo — Bangkok
23h 30m
including layover
Find flight
from$327
16:30 — 15:30
+2 days
15:40 — 19:15 NH117 All Nippon Airways
Seattle — Tokyo
15h 50m stop
11:05 — 16:20 NH847 All Nippon Airways
Tokyo — Bangkok
33h
including layover
Find flight
from$327
19:10 — 15:25
+2 days
19:10 — 17:00 TK204 Turkish Airlines
Seattle — Istanbul
8h 40m stop
01:40 — 15:25 TK68 Turkish Airlines
Istanbul — Bangkok
30h 15m
including layover
Find flight
from$437
19:10 — 05:15
+3 days
19:10 — 17:00 TK204 Turkish Airlines
Seattle — Istanbul
23h stop
16:00 — 05:15 TK58 Turkish Airlines
Istanbul — Bangkok
44h 5m
including layover
Find flight
from$437
23:35 — 12:15
+2 days
23:35 — 04:05 PR125 Philippine Airlines
Seattle — Manila
5h 35m stop
09:40 — 12:15 PR730 Philippine Airlines
Manila — Bangkok
22h 40m
including layover
Find flight
from$427
23:35 — 17:40
+2 days
22:35 — 04:45 PR125 Philippine Airlines
Seattle — Manila
10h 50m stop
15:05 — 17:45 PR736 Philippine Airlines
Manila — Bangkok
28h 5m
including layover
Find flight
from$427
*Departure and arrival times - local. Updated on July 3, 2025

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 00:25 to 23:59 from 3 Seattle airports and arrive 00:25 to 23:59 to 2 Bangkok airports. Average flight time is 30h 33m.

  • The fastest flight 17h 35m
  • Average flight time 30h 33m
  • The earliest flight 00:25
  • The latest flight 23:59
  • Distance 7450 ml

The cheapest months to travel to Bangkok are august (from 397 $), october (from 414 $), july (from 439 $).

The most expensive months are december (from 819 $), january (from 628 $), november (from 613 $).

What is the lowest airfare Seattle to Bangkok?

The cheapest plane ticket found by our users is $297. This airfare is for economy class on one-way SQ27 flight by Singapore Airlines for August 28, 2025 which leaves Seattle-Tacoma Intl in Seattle at 10:15 am and arrives at Bangkok Suvarnabhumi at 20:00.

Economy class
$297
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Business class
?
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First class
?
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Popular Airlines on the Route

The flight Seattle — Bangkok is served by 22 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Qatar Airways - 35 departures per week at the price of from $ 340 . And the most expensive tickets are offered by United Airlines airline - from $ 909.

Direct flights

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

Connecting Flights

There are 840 flights with layovers on the route. The fastest connecting flight is BR25 by EVA Airways Corporation takes 17h 35m and the cheapest is SQ27 by Singapore Airlines for $297.

  • QR - Qatar Airways
    from $340
    Find
  • AC - Air Canada
    from $323
    Find
  • JL - Japan Airlines - JAL
    from $344
    Find
  • PR - Philippine Airlines
    from $427
    Find
  • AF - Air France
    from $429
    Find
  • CI - China Airlines
    from $327
    Find
  • OZ - Asiana Airlines
    from $332
    Find
  • UA - United Airlines
    from $351
    Find
  • HU - Hainan Airlines
    from $512
    Find
  • JX - Jambojet
    from $310
    Find
  • BR - EVA Airways Corporation
    from $371
    Find
  • AS - Alaska Airlines
    from $396
    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
    Find
  • Seattle-Tacoma Intl-SEA
    from $297
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

Bangkok airports

  • Suvarnabhumi-BKK
    Find
  • 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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