AirHint found the following cheapest return flights from Rotterdam (RTM) to Ljubljana (LJU) in July 2025 (see full year).

Return flights

24 Jul - 30 Jul	transavia
01 Jul - 01 Jul	transavia
01 Jul - 01 Aug	transavia
16 Jul - 20 Jul	British Airways
18 Jul - 24 Jul	British Airways
23 Jul - 25 Jul	British Airways
18 Jul - 21 Jul	British Airways

Also check the deals for one-way flights from Rotterdam to Ljubljana in July.

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 Rotterdam to Ljubljana in July from $635

Return flights