Cheapest return ICN–OPO flights, December

AirHint found the following cheapest return flights from Seoul (ICN) to Porto (OPO) in December 2026 (see full year).

Return flights

09 Dec - 13 Dec LOT
25 Dec - 08 Jan Lufthansa
05 Dec - 12 Dec Air France
30 Dec - 06 Jan Lufthansa
08 Dec - 13 Dec Air France
16 Dec - 04 Jan Lufthansa
18 Dec - 31 Dec Lufthansa
25 Dec - 03 Jan Lufthansa
18 Dec - 24 Dec Lufthansa
20 Dec - 28 Dec Lufthansa
14 Dec - 17 Dec Etihad Airways
20 Dec - 02 Jan Lufthansa
06 Dec - 11 Dec Air Europa

Also check the deals for one-way flights from Seoul to Porto in December.

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