Cheapest return CGN–LJU flights, May

AirHint found the following cheapest return flights from Cologne (CGN) to Ljubljana (LJU) in May 2026 (see full year).

Return flights

27 May - 05 Jun Wizz Air
26 May - 30 May Ryanair
26 May - 28 May Ryanair
18 May - 21 May Eurowings
21 May - 01 Jun Ryanair
19 May - 21 May SWISS
23 May - 30 May Air Serbia
11 May - 18 May Eurowings
22 May - 24 May Ryanair
25 May - 31 May Eurowings
20 May - 22 May SWISS
25 May - 28 May Eurowings

Also check the deals for one-way flights from Cologne to Ljubljana in May.

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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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