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
16 Apr - 29 Apr	Finnair
20 Apr - 05 May	Finnair
26 Apr - 10 May	Finnair
07 Apr - 14 Apr	Finnair
25 Apr - 01 May	Finnair
01 Apr - 09 Apr	Turkish Airlines
24 Apr - 09 May	Turkish Airlines
25 Apr - 02 May	Turkish Airlines
26 Apr - 03 May	Turkish Airlines
05 Apr - 18 Apr	Finnair
02 Apr - 16 Apr	Finnair
05 Apr - 11 Apr	Finnair
04 Apr - 18 Apr	Finnair
18 Apr - 02 May	Finnair
04 Apr - 11 Apr	Finnair
22 Apr - 01 May	Air Canada

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Lisbon to Seoul in April from $830

Return flights