AirHint found the following cheapest return flights from Seoul (GMP) to Lisbon (LIS) in October 2025 (see full year).

Return flights

29 Oct - 03 Nov	Japan Airlines
28 Oct - 03 Nov	Japan Airlines
08 Oct - 15 Oct	Japan Airlines
14 Oct - 21 Oct	Japan Airlines
06 Oct - 14 Oct	Japan Airlines
06 Oct - 15 Oct	Japan Airlines
15 Oct - 05 Nov	Japan Airlines
14 Oct - 05 Nov	Japan Airlines
06 Oct - 19 Oct	Japan Airlines
12 Oct - 19 Oct	Japan Airlines
06 Oct - 13 Oct	Japan Airlines
02 Oct - 05 Oct	Japan Airlines
01 Oct - 19 Oct	Japan Airlines
09 Oct - 14 Oct	Japan Airlines
25 Oct - 01 Nov	Japan Airlines
16 Oct - 07 Nov	Japan Airlines
15 Oct - 07 Nov	Japan Airlines
17 Oct - 07 Nov	Japan Airlines
22 Oct - 02 Nov	Japan Airlines
30 Oct - 02 Nov	Japan Airlines

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

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 October from $2222

Return flights