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

Return flights

07 Apr - 21 Apr	Etihad Airways
08 Apr - 21 Apr	Etihad Airways
01 Apr - 13 Apr	Finnair
12 Apr - 21 Apr	Etihad Airways
12 Apr - 29 Apr	Etihad Airways
26 Apr - 10 May	Finnair
07 Apr - 14 Apr	Finnair
03 Apr - 17 Apr	Finnair
15 Apr - 03 May	Turkish Airlines
15 Apr - 02 May	Turkish Airlines
24 Apr - 09 May	Turkish Airlines
10 Apr - 19 Apr	Finnair
02 Apr - 16 Apr	Finnair
05 Apr - 11 Apr	Finnair
18 Apr - 02 May	Finnair

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