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

Return flights

14 Apr - 28 Apr	Etihad Airways
21 Apr - 28 Apr	Etihad Airways
22 Apr - 29 Apr	Etihad Airways
25 Apr - 09 May	Iberia
15 Apr - 29 Apr	Lufthansa
15 Apr - 22 Apr	Finnair
01 Apr - 15 Apr	Finnair
01 Apr - 06 Apr	Finnair
03 Apr - 08 Apr	Air France
01 Apr - 12 Apr	Finnair
29 Apr - 05 May	Finnair
10 Apr - 23 Apr	SWISS
01 Apr - 02 May	Air France

Also check the deals for one-way flights from Lisbon to Seoul 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 Lisbon to Seoul in April from 707€

Return flights