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

Return flights

28 Sep - 01 Oct	KLM
23 Sep - 01 Oct	Wizz Air Malta
14 Sep - 20 Sep	Ryanair
14 Sep - 21 Sep	Ryanair
12 Sep - 01 Oct	Wizz Air Malta
17 Sep - 24 Sep	Wizz Air Malta
03 Sep - 07 Sep	KLM
21 Sep - 06 Oct	Wizz Air Malta
25 Sep - 02 Oct	Wizz Air Malta
22 Sep - 29 Sep	Wizz Air Malta
12 Sep - 22 Sep	Wizz Air Malta
10 Sep - 18 Sep	Ryanair
26 Sep - 29 Sep	Wizz Air Malta
10 Sep - 17 Sep	Wizz Air Malta
13 Sep - 17 Sep	Ryanair
27 Sep - 04 Oct	Wizz Air Malta
30 Sep - 06 Oct	Wizz Air Malta
30 Sep - 05 Oct	Ryanair
26 Sep - 04 Oct	Wizz Air Malta
28 Sep - 04 Oct	Wizz Air Malta

Also check the deals for one-way flights from Vienna to Keflavik 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 Keflavik in September from 194€

Return flights