Cheapest return flights from Cologne to Ljubljana in September from 189€

AirHint found the following cheapest return flights from Cologne (CGN) to Ljubljana (LJU) in September 2025 (see full year).

Return flights

26 Sep - 30 Sep Lufthansa
16 Sep - 23 Sep Lufthansa
29 Sep - 06 Oct Lufthansa
12 Sep - 16 Sep Lufthansa
05 Sep - 12 Sep Lufthansa
07 Sep - 12 Sep Lufthansa
13 Sep - 21 Sep Lufthansa
27 Sep - 04 Oct Lufthansa
13 Sep - 17 Sep Lufthansa
06 Sep - 12 Sep Lufthansa
05 Sep - 13 Sep SWISS
06 Sep - 13 Sep Turkish Airlines

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

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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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