AirHint found the following cheapest return flights from Sapporo (CTS) to Seoul (ICN) in August 2026 (see full year).
Return flights
| 20 Aug - 27 Aug | Korean Air | direct | |
| 18 Aug - 25 Aug | Korean Air | direct | |
| 01 Aug - 21 Aug | Korean Air | direct | |
| 09 Aug - 11 Aug | Korean Air | direct | |
| 12 Aug - 15 Aug | Korean Air | direct |
Also check the deals for one-way flights from Sapporo to Seoul in August.
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