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

Return flights

03 Sep - 07 Sep	Ryanair
04 Sep - 07 Sep	Ryanair
25 Sep - 28 Sep	Ryanair
13 Sep - 17 Sep	Ryanair
24 Sep - 28 Sep	Ryanair
10 Sep - 13 Sep	Ryanair
05 Sep - 07 Sep	Ryanair
05 Sep - 12 Sep	Ryanair
10 Sep - 14 Sep	Ryanair
07 Sep - 13 Sep	Ryanair
17 Sep - 07 Oct	Norwegian	direct
28 Sep - 05 Oct	Ryanair
30 Sep - 07 Oct	Norwegian	direct
16 Sep - 07 Oct	Norwegian	direct
24 Sep - 07 Oct	Norwegian	direct
17 Sep - 06 Oct	Norwegian	direct
30 Sep - 06 Oct	Norwegian	direct
30 Sep - 14 Oct	Norwegian	direct
17 Sep - 08 Oct	Norwegian	direct
30 Sep - 08 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 108€

Return flights