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

Return flights

01 Apr - 08 Apr	Air France
02 Apr - 08 Apr	LOT
01 Apr - 15 Apr	Air France
01 Apr - 19 Apr	LOT
08 Apr - 19 Apr	LOT
01 Apr - 11 Apr	Air France
02 Apr - 06 Apr	LOT
01 Apr - 07 Apr	Air France
01 Apr - 13 Apr	Air France
04 Apr - 11 Apr	Air France
08 Apr - 06 May	Finnair
15 Apr - 06 May	Finnair
26 Apr - 01 May	Asiana Airlines
19 Apr - 13 May	Finnair
15 Apr - 01 May	Finnair
26 Apr - 23 May	LOT
29 Apr - 07 May	Finnair
18 Apr - 12 May	Finnair
22 Apr - 07 May	Finnair
28 Apr - 11 May	Etihad Airways

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 $723

Return flights