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

Return flights

01 Apr - 14 Apr	Air France
01 Apr - 12 Apr	Air France
01 Apr - 08 Apr	Lufthansa
02 Apr - 08 Apr	Lufthansa
07 Apr - 14 Apr	Lufthansa
01 Apr - 09 Apr	Air France
08 Apr - 15 Apr	SWISS
14 Apr - 21 Apr	Lufthansa
28 Apr - 05 May	Lufthansa
08 Apr - 17 Apr	SWISS
22 Apr - 29 Apr	SWISS
29 Apr - 06 May	SWISS
27 Apr - 04 May	LOT
29 Apr - 04 May	SWISS
09 Apr - 07 May	Finnair
22 Apr - 03 May	SWISS
23 Apr - 11 May	Lufthansa
22 Apr - 10 May	SWISS
29 Apr - 10 May	SWISS
29 Apr - 03 May	SWISS

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

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 April from 600€

Return flights