Cheapest return ICN–OPO flights, May

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

Return flights

11 May - 20 May Lufthansa
11 May - 15 May Lufthansa
10 May - 15 May Lufthansa
12 May - 20 May Lufthansa
10 May - 12 May Lufthansa
10 May - 20 May Lufthansa
19 May - 26 May China Eastern
19 May - 27 May Lufthansa
18 May - 27 May Lufthansa
10 May - 16 May Lufthansa
13 May - 16 Jun Air France
18 May - 04 Jun Lufthansa
19 May - 04 Jun Lufthansa
28 May - 11 Jun Etihad Airways
25 May - 01 Jun Etihad Airways
28 May - 05 Jun Etihad Airways
27 May - 01 Jun Etihad Airways
19 May - 03 Jun Etihad Airways
19 May - 05 Jun Etihad Airways
13 May - 10 Jun Lufthansa

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

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