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

Return flights

30 Apr - 16 May	Finnair
15 Apr - 10 May	Finnair
14 Apr - 29 Apr	Finnair
13 Apr - 08 May	Finnair
01 Apr - 08 Apr	LOT
20 Apr - 04 May	Finnair
28 Apr - 07 May	Lufthansa
24 Apr - 08 May	Finnair
01 Apr - 15 Apr	Finnair
01 Apr - 22 Apr	Finnair
19 Apr - 03 May	Turkish Airlines
12 Apr - 03 May	Turkish Airlines
19 Apr - 01 May	Turkish Airlines
30 Apr - 02 May	Turkish Airlines
12 Apr - 19 Apr	Finnair
18 Apr - 25 Apr	Turkish Airlines
17 Apr - 25 Apr	Turkish Airlines
18 Apr - 30 Apr	LOT
12 Apr - 26 Apr	Finnair
19 Apr - 26 Apr	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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Lisbon to Seoul in April from 705€

Return flights