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

Return flights

19 Sep - 22 Sep	Ryanair
09 Sep - 13 Sep	easyJet
11 Sep - 13 Sep	Ryanair
17 Sep - 20 Sep	Ryanair
11 Sep - 15 Sep	Ryanair
12 Sep - 14 Sep	Ryanair
26 Sep - 04 Oct	Ryanair
10 Sep - 15 Sep	Ryanair
17 Sep - 21 Sep	Ryanair
04 Sep - 08 Sep	Ryanair
25 Sep - 30 Sep	Ryanair
26 Sep - 05 Oct	Ryanair
19 Sep - 05 Oct	Ryanair

Also check the deals for one-way flights from Reus 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 Reus to Oslo in September from $163

Return flights