
Popular airlines from Seattle to Koh Samui Islands
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EVA Airways
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KLM
Lufthansa
Qatar Airways
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Cheap flights from Seattle (SEA) to Koh Samui Islands (USM)
Prices were available within the past 7 days and start at CA $642 for one-way flights and CA $1,028 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov. 4 - Mon, Nov. 10
SEA
Seattle
USM
Koh Samui
CA $1,028 Roundtrip, found 1 day ago
CA $1,028
Roundtrip
found 1 day ago

Tue, Nov. 4 - Mon, Nov. 10
SEA
Seattle
USM
Koh Samui
CA $1,081 Roundtrip, found 1 day ago
CA $1,081
Roundtrip
found 1 day ago

Tue, Nov. 4 - Mon, Nov. 10
SEA
Seattle
USM
Koh Samui
CA $1,449 Roundtrip, found 1 day ago
CA $1,449
Roundtrip
found 1 day ago

Thu, Sep. 4 - Mon, Sep. 15
SEA
Seattle
USM
Koh Samui
CA $1,485 Roundtrip, found 2 days ago
CA $1,485
Roundtrip
found 2 days ago

Tue, Nov. 4 - Mon, Nov. 10
SEA
Seattle
USM
Koh Samui
CA $1,945 Roundtrip, found 1 day ago
CA $1,945
Roundtrip
found 1 day ago

Tue, Nov. 4 - Mon, Nov. 10
SEA
Seattle
USM
Koh Samui
CA $2,332 Roundtrip, found 1 day ago
CA $2,332
Roundtrip
found 1 day ago
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