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

Return flights

01 Apr - 08 Apr	Lufthansa
01 Apr - 09 Apr	Lufthansa
02 Apr - 22 Apr	Lufthansa
02 Apr - 09 Apr	Lufthansa
06 Apr - 20 Apr	Lufthansa
02 Apr - 10 Apr	Lufthansa
02 Apr - 15 Apr	Lufthansa
21 Apr - 28 Apr	Lufthansa
29 Apr - 05 May	Lufthansa
30 Apr - 05 May	Lufthansa
26 Apr - 03 May	LOT
05 Apr - 11 Apr	Lufthansa
28 Apr - 04 May	Lufthansa
26 Apr - 10 May	MIAT Mongolian Airlines

Also check the deals for one-way flights from Seoul to Ljubljana 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 Ljubljana in April from $606

Return flights