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

Return flights

27 Aug - 01 Sep	Lufthansa
18 Aug - 25 Aug	SWISS
30 Aug - 07 Sep	SWISS
30 Aug - 06 Sep	Air Serbia
05 Aug - 13 Aug	SWISS
20 Aug - 24 Aug	Lufthansa
26 Aug - 05 Sep	Lufthansa
29 Aug - 05 Sep	SWISS
16 Aug - 23 Aug	Lufthansa
28 Aug - 05 Sep	SWISS
16 Aug - 30 Aug	SWISS
15 Aug - 22 Aug	LOT
30 Aug - 05 Sep	Turkish Airlines
16 Aug - 05 Sep	SWISS
01 Aug - 10 Aug	LOT
27 Aug - 27 Aug	LOT
01 Aug - 06 Aug	Lufthansa
14 Aug - 21 Aug	LOT

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

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 Ljubljana to Oslo in August from $225

Return flights