AirHint found the following cheapest one-way flights from Seoul (ICN) to Lisbon (LIS) in October 2025 (see full year).

One-Way flights

26 Oct	Thai AirAsia X
28 Oct	Thai AirAsia X
23 Oct	Sichuan Airlines
25 Oct	Sichuan Airlines
29 Oct	Scoot Tigerair
16 Oct	Sichuan Airlines
24 Oct	Etihad Airways
17 Oct	Etihad Airways
22 Oct	Vietnam Airlines
20 Oct	Etihad Airways

Also check the deals for return 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 one-way flights from Seoul to Lisbon in October from 249€

One-Way flights