AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (GMP) in October 2026 (see full year).
One-Way flights
| 11 Oct | Japan Airlines | ||
| 12 Oct | Japan Airlines | ||
| 15 Oct | EVA Air | ||
| 02 Oct | ANA | ||
| 08 Oct | ANA | ||
| 07 Oct | ANA | ||
| 10 Oct | ANA | ||
| 04 Oct | Emirates | ||
| 05 Oct | Emirates |
Also check the deals for return flights from Seattle to Seoul in October.
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