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

Return flights

21 Aug - 24 Aug	transavia
22 Aug - 25 Aug	transavia
15 Aug - 24 Aug	transavia
28 Aug - 02 Sep	transavia
24 Aug - 30 Aug	transavia
22 Aug - 26 Aug	transavia
14 Aug - 21 Aug	transavia
17 Aug - 24 Aug	transavia
05 Aug - 12 Aug	transavia
10 Aug - 14 Aug	British Airways
08 Aug - 12 Aug	transavia

Also check the deals for one-way flights from Rotterdam 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 Rotterdam to Oslo in August from 289€

Return flights