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

Return flights

27 Sep - 29 Sep	Ryanair
26 Sep - 29 Sep	Ryanair
11 Sep - 14 Sep	Ryanair
10 Sep - 16 Sep	Ryanair
05 Sep - 13 Sep	Ryanair
12 Sep - 15 Sep	Ryanair
06 Sep - 09 Sep	Ryanair
18 Sep - 22 Sep	Ryanair
17 Sep - 07 Oct	Norwegian	direct
07 Sep - 12 Sep	Ryanair
12 Sep - 12 Sep	Ryanair
24 Sep - 07 Oct	Norwegian	direct
23 Sep - 07 Oct	Norwegian	direct
29 Sep - 05 Oct	Ryanair
24 Sep - 14 Oct	Norwegian	direct
24 Sep - 13 Oct	Norwegian	direct
19 Sep - 07 Oct	Norwegian	direct
26 Sep - 07 Oct	Norwegian	direct
17 Sep - 05 Oct	Norwegian	direct
23 Sep - 14 Oct	Norwegian	direct

Also check the deals for one-way flights from Vienna 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 Vienna to Oslo in September from 112€

Return flights