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

One-Way flights

11 Dec	T'way Air
13 Dec	Sichuan Airlines
03 Dec	Etihad Airways
02 Dec	Etihad Airways
17 Dec	T'way Air
16 Dec	Etihad Airways
05 Dec	Etihad Airways
10 Dec	T'way Air
07 Dec	Lufthansa
08 Dec	Malaysia Airlines

Also check the deals for return 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 one-way flights from Seoul to Lisbon in December from $330

One-Way flights