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

Return flights

30 Dec - 10 Jan	Japan Airlines
21 Dec - 31 Dec	Japan Airlines
20 Dec - 30 Dec	Japan Airlines
01 Dec - 07 Dec	Japan Airlines
13 Dec - 30 Dec	Japan Airlines
20 Dec - 01 Jan	Japan Airlines
18 Dec - 01 Jan	Japan Airlines
27 Dec - 06 Jan	Japan Airlines
29 Dec - 06 Jan	Japan Airlines
26 Dec - 03 Jan	EVA Air
25 Dec - 03 Jan	EVA Air
06 Dec - 13 Dec	Japan Airlines
01 Dec - 15 Dec	Japan Airlines
25 Dec - 30 Dec	Japan Airlines
06 Dec - 12 Dec	Japan Airlines
24 Dec - 31 Dec	Japan Airlines
23 Dec - 01 Jan	Japan Airlines
25 Dec - 01 Jan	Japan Airlines
17 Dec - 27 Dec	Japan Airlines
23 Dec - 02 Jan	Japan Airlines

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Seoul to Lisbon in December from 1775€

Return flights