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

Return flights

11 Jan - 19 Jan	Scandinavian Airlines
25 Jan - 31 Jan	LOT
09 Jan - 23 Jan	Lufthansa
14 Jan - 19 Jan	Etihad Airways
16 Jan - 21 Jan	Etihad Airways
21 Jan - 30 Jan	KLM
05 Jan - 20 Jan	Etihad Airways
31 Jan - 23 Feb	Lufthansa
01 Jan - 15 Jan	Finnair
16 Jan - 21 Jan	Korean Air	direct

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

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 Lisbon to Seoul in January from 578€

Return flights