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

Return flights

02 Apr - 13 Apr	Lufthansa
01 Apr - 09 Apr	Lufthansa
02 Apr - 14 Apr	Lufthansa
01 Apr - 15 Apr	Lufthansa
15 Apr - 21 Apr	Lufthansa
08 Apr - 14 Apr	Lufthansa
22 Apr - 26 Apr	LOT
08 Apr - 21 Apr	LOT
08 Apr - 22 Apr	LOT
13 Apr - 20 Apr	LOT
28 Apr - 27 May	LOT
22 Apr - 03 May	LOT
27 Apr - 04 May	LOT
21 Apr - 03 May	LOT
22 Apr - 05 May	Lufthansa
22 Apr - 06 May	Lufthansa
08 Apr - 06 May	Lufthansa
13 Apr - 13 May	Lufthansa
29 Apr - 07 May	Lufthansa
29 Apr - 06 May	Lufthansa

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 $628

Return flights