One-way and roundtrip flights from Bangkok17°Mild
Flights to Seattle in September 2026
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Flights and prices
How much are flights from Bangkok to Seattle?
Planning a trip to Seattle? Compare dates, airlines, flight times and direct options from Bangkok. 21 one-way fares from ฿16,689 · 5 roundtrips from ฿32,062. These results are for september 2026.
- One way from
- ฿16,689
- 21 outbound-only options
- Roundtrip from
- ฿32,062
- 5 complete trips
- Flight options
- 5
- Roundtrips available
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Roundtrip deals
5 fares · from ฿32,062
Outbound and return flights together in one total fare.
Trip datesFlight itineraryTotal fareView
Sep 10 → Sep 144 nights
Roundtrip
- Depart
- Sep 10
- Return
- Sep 14
Out17:30BKK → SEA19:4514h 50m · 1 stop · via Taipei14h 50m · 1 stop
Return01:55SEA → BKK09:4515h 50m · 1 stop · via Taipei15h 50m · 1 stop
Outbound17:30BKK19:45SEA14h 50m1 stop · via Taipei
Return01:55SEA09:45BKK15h 50m1 stop · via Taipei
Operated by
China Airlines
China Airlines฿32,062
฿34,055-6%
Save ฿1,993
China AirlinesRoundtrip total฿32,062฿34,055−6%Save ฿1,993View deal
Cheapest in the next 365 daysDown from ฿37,880 on Sep 8
9 seats leftSep 11 → Sep 143 nights
Roundtrip
- Depart
- Sep 11
- Return
- Sep 14
Out13:10BKK → SEA16:1014h 50m · 1 stop · via Taipei14h 50m · 1 stop
Return01:55SEA → BKK09:4515h 50m · 1 stop · via Taipei15h 50m · 1 stop
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Return01:55SEA09:45BKK15h 50m1 stop · via Taipei
Operated by
Starlux AirlinesChina Airlines
Starlux AirlinesChina Airlines฿33,400
฿34,055-2%
Save ฿655
Starlux AirlinesChina AirlinesRoundtrip total฿33,400฿34,055−2%Save ฿655View deal
9 seats left
Sep 10 → Sep 155 nights
Roundtrip
- Depart
- Sep 10
- Return
- Sep 15
Out17:30BKK → SEA19:4514h 50m · 1 stop · via Taipei14h 50m · 1 stop
Return01:55SEA → BKK09:4515h 50m · 1 stop · via Taipei15h 50m · 1 stop
Outbound17:30BKK19:45SEA14h 50m1 stop · via Taipei
Return01:55SEA09:45BKK15h 50m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿34,030
฿34,055
Save ฿25
China AirlinesRoundtrip total฿34,030฿34,055Save ฿25View deal
9 seats left
Sep 12 → Sep 153 nights
Roundtrip
- Depart
- Sep 12
- Return
- Sep 15
Out13:10BKK → SEA16:1014h 50m · 1 stop · via Taipei14h 50m · 1 stop
Return01:55SEA → BKK09:4515h 50m · 1 stop · via Taipei15h 50m · 1 stop
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Return01:55SEA09:45BKK15h 50m1 stop · via Taipei
Operated byStarlux AirlinesChina Airlines
Starlux AirlinesChina Airlines฿35,350
Starlux AirlinesChina AirlinesCurrent fare
Roundtrip total฿35,350Current fareView deal
9 seats left
Sep 11 → Sep 154 nights
Roundtrip
- Depart
- Sep 11
- Return
- Sep 15
Out13:10BKK → SEA16:1014h 50m · 1 stop · via Taipei14h 50m · 1 stop
Return01:55SEA → BKK09:4515h 50m · 1 stop · via Taipei15h 50m · 1 stop
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Return01:55SEA09:45BKK15h 50m1 stop · via Taipei
Operated byStarlux AirlinesChina Airlines
Starlux AirlinesChina Airlines฿35,435
Starlux AirlinesChina AirlinesCurrent fare
Roundtrip total฿35,435Current fareView deal
9 seats left
One-way deals
21 fares · from ฿16,689
Outbound fare only — add a return separately if you need one.
Trip datesFlight itineraryTotal fareView
mon · Sep 14One way
Departuremon · Sep 14
One way2026
17:30BKK → SEA19:4514h 50m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:45SEA14h 50m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
3 seats leftmon · Sep 21One way
Departuremon · Sep 21
One way2026
17:30BKK → SEA19:1514h 20m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:15SEA14h 20m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
9 seats leftsat · Sep 19One way
Departuresat · Sep 19
One way2026
17:30BKK → SEA19:1514h 20m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:15SEA14h 20m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
7 seats leftthu · Sep 10One way
Departurethu · Sep 10
One way2026
17:30BKK → SEA19:4514h 50m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:45SEA14h 50m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
9 seats leftthu · Sep 17One way
Departurethu · Sep 17
One way2026
17:30BKK → SEA19:1514h 20m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:15SEA14h 20m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
8 seats lefttue · Sep 22One way
Departuretue · Sep 22
One way2026
17:30BKK → SEA19:1514h 20m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:15SEA14h 20m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
9 seats lefttue · Sep 29One way
Departuretue · Sep 29
One way2026
17:30BKK → SEA19:1514h 20m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:15SEA14h 20m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿16,689
฿18,360-9%
฿1,671 below average
China AirlinesOne-way fare฿16,689฿18,360−9%Save ฿1,671View deal
Cheapest in the next 365 days
8 seats lefttue · Sep 15One way
Departuretue · Sep 15
One way2026
13:10BKK → SEA16:1014h 50m · 1 stop
2h 10m layover Taipei
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Operated byStarlux Airlines
Starlux Airlines฿16,826
฿18,360-8%
฿1,534 below average
Starlux AirlinesOne-way fare฿16,826฿18,360−8%Save ฿1,534View deal
Lowest 10% in next 365 days
wed · Sep 23One way
Departurewed · Sep 23
One way2026
13:10BKK → SEA16:1014h 50m · 1 stop
2h 10m layover Taipei
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Operated byStarlux Airlines
Starlux Airlines฿16,826
฿18,360-8%
฿1,534 below average
Starlux AirlinesOne-way fare฿16,826฿18,360−8%Save ฿1,534View deal
Lowest 10% in next 365 days
wed · Sep 30One way
Departurewed · Sep 30
One way2026
13:10BKK → SEA16:1014h 50m · 1 stop
2h 10m layover Taipei
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Operated byStarlux Airlines
Starlux Airlines฿16,826
฿18,360-8%
฿1,534 below average
Starlux AirlinesOne-way fare฿16,826฿18,360−8%Save ฿1,534View deal
Lowest 10% in next 365 days
fri · Sep 11One way
Departurefri · Sep 11
One way2026
13:10BKK → SEA16:1014h 50m · 1 stop
2h 10m layover Taipei
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Operated byStarlux Airlines
Starlux Airlines฿16,847
฿18,360-8%
฿1,513 below average
Starlux AirlinesOne-way fare฿16,847฿18,360−8%Save ฿1,513View deal
Lowest 10% in next 365 days
sat · Sep 12One way
Departuresat · Sep 12
One way2026
13:10BKK → SEA16:1014h 50m · 1 stop
2h 10m layover Taipei
Outbound13:10BKK16:10SEA14h 50m1 stop · via Taipei
Operated byStarlux Airlines
Starlux Airlines฿16,847
฿18,360-8%
฿1,513 below average
Starlux AirlinesOne-way fare฿16,847฿18,360−8%Save ฿1,513View deal
Lowest 10% in next 365 days
sun · Sep 13One way
Departuresun · Sep 13
One way2026
17:15BKK → SEA19:4014h 55m · 1 stop
1h 30m layover Taipei
Outbound17:15BKK19:40SEA14h 55m1 stop · via Taipei
Operated by
Thai Airways
Thai Airways฿17,766
฿18,360-3%
฿594 below average
Thai AirwaysOne-way fare฿17,766฿18,360−3%Save ฿594View deal
Lowest 10% in next 365 days
thu · Sep 24One way
Departurethu · Sep 24
One way2026
09:50BKK → SEA13:3716h 7m · 1 stop
1h 40m layover Seoul
Outbound09:50BKK13:37SEA16h 7m1 stop · via Seoul
Operated by
Korean Air
Korean Air฿17,830
฿18,360-3%
฿530 below average
Korean AirOne-way fare฿17,830฿18,360−3%Save ฿530View deal
Lowest 10% in next 365 days
9 seats leftsat · Sep 26One way
Departuresat · Sep 26
One way2026
17:15BKK → SEA19:4014h 55m · 1 stop
1h 30m layover Taipei
Outbound17:15BKK19:40SEA14h 55m1 stop · via Taipei
Operated byThai Airways
Thai Airways฿18,592
Thai AirwaysCurrent fare
One-way fare฿18,592Current fareView deal
Lowest 10% in next 365 days
4 seats leftwed · Sep 16One way
Departurewed · Sep 16
One way2026
17:15BKK → SEA19:4014h 55m · 1 stop
1h 30m layover Taipei
Outbound17:15BKK19:40SEA14h 55m1 stop · via Taipei
Operated byThai Airways
Thai Airways฿18,608
Thai AirwaysCurrent fare
One-way fare฿18,608Current fareView deal
Lowest 10% in next 365 days
4 seats leftmon · Sep 28One way
Departuremon · Sep 28
One way2026
07:35BKK → SEA10:0514h 40m · 1 stop
1h 50m layover Hong Kong
Outbound07:35BKK10:05SEA14h 40m1 stop · via Hong Kong
Operated by
Cathay Pacific
Cathay Pacific฿18,995
Cathay PacificCurrent fare
One-way fare฿18,995Current fareView deal
Lowest 10% in next 365 days
sun · Sep 27One way
Departuresun · Sep 27
One way2026
17:30BKK → SEA19:1514h 20m · 1 stop
1h 25m layover Taipei
Outbound17:30BKK19:15SEA14h 20m1 stop · via Taipei
Operated byChina Airlines
China Airlines฿19,746
China AirlinesCurrent fare
One-way fare฿19,746Current fareView deal
Down from ฿19,741 on Sep 8
9 seats leftfri · Sep 25One way
Departurefri · Sep 25
One way2026
17:15BKK → SEA19:4014h 55m · 1 stop
1h 30m layover Taipei
Outbound17:15BKK19:40SEA14h 55m1 stop · via Taipei
Operated byThai Airways
Thai Airways฿22,022
Thai AirwaysCurrent fare
One-way fare฿22,022Current fareView deal
sun · Sep 20One way
Departuresun · Sep 20
One way2026
17:15BKK → SEA19:4014h 55m · 1 stop
1h 30m layover Taipei
Outbound17:15BKK19:40SEA14h 55m1 stop · via Taipei
Operated byThai Airways
Thai Airways฿22,022
Thai AirwaysCurrent fare
One-way fare฿22,022Current fareView deal
Plan with confidence
Find the trip that fits
Compare prices, dates, airlines and travel time. Then choose the deal that feels right.
Flexible timing
Compare Seattle by travel month
Open a month to compare its dates, prices and available flights.
Weather through the year
Typical temperatures in Seattle
Usual monthly temperatures can help you choose when to go. They are not a live forecast.
5°Jan
6°Feb
8°Mar
11°Apr
14°May
17°Jun
20°Jul
20°Aug
17°Sep
12°Oct
7°Nov
5°Dec
Useful trip facts
What to know about Seattle
- Country
- United States
- Arrival code
- SEA
- Typical annual temperature
- 11°C
- Usual temperature, not a forecast
- Trip styles
- City
- Bangkok departure airports
- BKK
- Airports represented in the current fare results
- Arrival airports
- SEA
- Airports represented in the current fare results
Why go
Why travelers consider Seattle
Emerald City of the Pacific Northwest. Coffee culture, tech innovation, and stunning natural beauty between Puget Sound and the Cascade Mountains.
Explore related searches
Common questions about Seattle
What is the lowest available one-way fare for Seattle?
The lowest available one-way fare is ฿16,689. It is compared only with other one-way fares.
What is the lowest available roundtrip fare for Seattle?
The lowest available roundtrip fare is ฿32,062. Check the dates, baggage and final total before booking.
How does September 2026 compare with other Seattle options?
The typical fare is ฿34,030, about 0% lower than other available options at ฿34,030.
What is the cheapest flight from Bangkok to Seattle?
The lowest currently observed flight from Bangkok to Seattle is ฿32,062. Confirm the final itinerary total and availability before booking.
When is the best time to fly from Bangkok to Seattle?
Based on current prices, September 2026 offers some of the best deals from Bangkok to Seattle. Check the month-by-month breakdown on this page for the cheapest times to fly.