Cheapest return GMP–LIS flights, May

AirHint found the following cheapest return flights from Seoul (GMP) to Lisbon (LIS) in May 2026 (see full year).

Return flights

01 May - 03 May Japan Airlines
13 May - 19 May Jeju Air
19 May - 26 May Japan Airlines
07 May - 19 May Japan Airlines
14 May - 25 May Japan Airlines
01 May - 06 May Japan Airlines
15 May - 19 May EVA Air
11 May - 19 May Japan Airlines
11 May - 27 May Japan Airlines
18 May - 27 May Japan Airlines
19 May - 07 Jun Japan Airlines
25 May - 01 Jun Japan Airlines
20 May - 04 Jun Japan Airlines
26 May - 09 Jun Japan Airlines
19 May - 03 Jun Japan Airlines
13 May - 03 Jun Japan Airlines
13 May - 10 Jun Japan Airlines
17 May - 12 Jun Japan Airlines
28 May - 06 Jun Japan Airlines
26 May - 03 Jun Japan Airlines

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

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