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

Return flights

03 Oct - 12 Oct	EVA Air
02 Oct - 11 Oct	EVA Air
26 Oct - 05 Nov	Japan Airlines
16 Oct - 25 Oct	EVA Air
14 Oct - 25 Oct	Japan Airlines
03 Oct - 22 Nov	Japan Airlines
08 Oct - 13 Oct	Japan Airlines
03 Oct - 09 Oct	Japan Airlines
04 Oct - 10 Oct	Japan Airlines
04 Oct - 09 Oct	Japan Airlines
07 Oct - 12 Oct	Japan Airlines
01 Oct - 18 Oct	Japan Airlines
31 Oct - 06 Nov	Japan Airlines
26 Oct - 07 Nov	Japan Airlines
25 Oct - 04 Nov	Japan Airlines
25 Oct - 01 Nov	Japan Airlines
21 Oct - 01 Nov	Japan Airlines
28 Oct - 04 Nov	Japan Airlines
25 Oct - 06 Nov	Japan Airlines
28 Oct - 06 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 $1423

Return flights