AirHint found the following cheapest return flights from Sapporo (CTS) to Seoul (ICN) in October 2026 (see full year).
Return flights
| 13 Oct - 20 Oct | Asiana Airlines | direct | |
| 13 Oct - 18 Oct | Asiana Airlines | direct | |
| 10 Oct - 13 Oct | Korean Air | direct | |
| 10 Oct - 16 Oct | Korean Air | direct |
Also check the deals for one-way flights from Sapporo to Seoul in October.
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