Cheapest return flights from Oslo to Ljubljana in September from 190€

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

Return flights

04 Sep - 11 Sep KLM
19 Sep - 22 Sep SWISS
04 Sep - 07 Sep Air Serbia

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

Skyscanner

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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