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

Return flights

21 Oct - 30 Oct	Air France
21 Oct - 29 Oct	Air France
18 Oct - 29 Oct	Etihad Airways
21 Oct - 28 Oct	Air France
23 Oct - 28 Oct	Scandinavian Airlines
25 Oct - 05 Nov	Etihad Airways
20 Oct - 27 Oct	Lufthansa
18 Oct - 25 Oct	Etihad Airways
18 Oct - 28 Oct	Etihad Airways
28 Oct - 08 Nov	Etihad Airways
28 Oct - 13 Nov	Etihad Airways
19 Oct - 28 Oct	Scandinavian Airlines
16 Oct - 25 Oct	Etihad Airways
21 Oct - 01 Nov	Scandinavian Airlines
28 Oct - 04 Nov	Air France
24 Oct - 05 Nov	Emirates

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Seoul to Lisbon in October from 497€

Return flights