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

Return flights

04 Sep - 16 Sep	Finnair
03 Sep - 18 Sep	Air France
02 Sep - 18 Sep	Air France
07 Sep - 21 Sep	Air France
02 Sep - 16 Sep	Air France
07 Sep - 19 Sep	Air France
04 Sep - 18 Sep	KLM
05 Sep - 17 Sep	Finnair
06 Sep - 17 Sep	KLM
06 Sep - 19 Sep	KLM

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

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 Sao Paulo to Oslo in September from 990€

Return flights