AirHint found the following cheapest one-way flights from Cologne (CGN) to Ljubljana (LJU) in September 2026 (see full year).
One-Way flights
| 18 Sep | Wizz Air Malta | ||
| 16 Sep | Lufthansa | ||
| 14 Sep | Eurowings | ||
| 17 Sep | Pegasus Airlines | ||
| 15 Sep | Lufthansa |
Also check the deals for return flights from Cologne to Ljubljana in September.
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