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	KLM
01 Apr - 22 Apr	Etihad Airways
03 Apr - 12 Apr	Finnair
29 Apr - 06 May	Finnair
24 Apr - 03 May	Etihad Airways
29 Apr - 10 May	Etihad Airways
22 Apr - 30 Apr	Finnair
22 Apr - 26 Apr	Etihad Airways
05 Apr - 12 Apr	Finnair
29 Apr - 03 May	Etihad Airways
03 Apr - 11 Apr	Finnair
13 Apr - 20 Apr	Finnair
22 Apr - 01 May	Finnair
29 Apr - 04 May	Finnair
29 Apr - 08 May	Finnair
26 Apr - 13 May	Finnair
26 Apr - 06 May	Finnair
15 Apr - 22 Apr	Finnair
28 Apr - 05 May	Finnair
15 Apr - 19 Apr	KLM

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 673€

Return flights