AirHint found the following cheapest return flights from Porto (OPO) to Seoul (ICN) in May 2026 (see full year).
Return flights
| 12 May - 30 May | KLM | ||
| 08 May - 15 May | Turkish Airlines | ||
| 30 May - 09 Jun | Turkish Airlines | ||
| 30 May - 20 Jun | Turkish Airlines |
Also check the deals for one-way flights from Porto to Seoul in May.
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