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

Return flights

18 Jan - 23 Jan	KLM
18 Jan - 28 Jan	KLM
18 Jan - 26 Jan	KLM
18 Jan - 21 Jan	Air France
18 Jan - 22 Jan	KLM
22 Jan - 29 Jan	Air France
22 Jan - 26 Jan	Air France
25 Jan - 01 Feb	KLM
28 Jan - 11 Feb	Air France
18 Jan - 01 Feb	KLM
22 Jan - 01 Feb	Air France
30 Jan - 01 Feb	Air France
17 Jan - 22 Jan	KLM
17 Jan - 01 Feb	KLM
22 Jan - 25 Jan	Air France
18 Jan - 25 Jan	KLM
27 Jan - 05 Feb	KLM
26 Jan - 04 Feb	Air France
25 Jan - 04 Feb	KLM
15 Jan - 11 Feb	KLM

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 507€

Return flights