AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (GMP) in January 2026 (see full year).
One-Way flights
| 05 Jan | Japan Airlines | ||
| 12 Jan | Japan Airlines | ||
| 13 Jan | Japan Airlines | ||
| 30 Jan | Japan Airlines | ||
| 31 Jan | Japan Airlines | ||
| 07 Jan | ANA | ||
| 16 Jan | ANA | ||
| 02 Jan | EVA Air | ||
| 03 Jan | ANA |
Also check the deals for return flights from Seattle to Seoul in January.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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