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

Return flights

19 Aug - 20 Aug	transavia
21 Aug - 28 Aug	transavia
18 Aug - 25 Aug	transavia
26 Aug - 31 Aug	transavia
22 Aug - 24 Aug	transavia
07 Aug - 13 Aug	transavia
05 Aug - 10 Aug	transavia
15 Aug - 22 Aug	transavia
14 Aug - 23 Aug	transavia
01 Aug - 06 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 243€

Return flights