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

Return flights

17 Jan - 28 Jan	KLM
17 Jan - 25 Jan	KLM
17 Jan - 21 Jan	KLM
02 Jan - 23 Jan	Lufthansa
26 Jan - 06 Feb	Air France
26 Jan - 04 Feb	Air France
29 Jan - 06 Feb	KLM
26 Jan - 03 Feb	Air France
27 Jan - 03 Feb	KLM
25 Jan - 06 Feb	KLM
17 Jan - 24 Jan	KLM
07 Jan - 17 Jan	Lufthansa
14 Jan - 27 Jan	Lufthansa
25 Jan - 30 Jan	Lufthansa
14 Jan - 22 Jan	Lufthansa
28 Jan - 30 Jan	Lufthansa
28 Jan - 08 Feb	LOT
21 Jan - 08 Feb	LOT
27 Jan - 01 Feb	LOT
21 Jan - 01 Feb	LOT

Also check the deals for one-way flights from Seoul to Lisbon 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 Seoul to Lisbon in January from $598

Return flights