AirHint found the following cheapest return flights from Porto (OPO) to Seoul (ICN) in August 2026 (see full year).
Return flights
| 04 Aug - 16 Aug | Lufthansa | ||
| 23 Aug - 29 Aug | Turkish Airlines | ||
| 08 Aug - 15 Aug | Turkish Airlines | ||
| 15 Aug - 22 Aug | Turkish Airlines | ||
| 15 Aug - 27 Aug | Lufthansa | ||
| 11 Aug - 21 Aug | Lufthansa |
Also check the deals for one-way flights from Porto to Seoul in August.
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