AirHint found the following cheapest return flights from Vienna (VIE) to Keflavik (KEF) in September 2026 (see full year).

Return flights

13 Sep - 23 Sep	KLM
08 Sep - 15 Sep	Scandinavian Airlines
13 Sep - 27 Sep	Transavia France
06 Sep - 13 Sep	Transavia France
07 Sep - 13 Sep	Transavia France
13 Sep - 24 Sep	KLM
28 Sep - 08 Oct	Ryanair
02 Sep - 09 Sep	Scandinavian Airlines
13 Sep - 25 Sep	Transavia France
01 Sep - 15 Sep	Scandinavian Airlines
17 Sep - 26 Sep	Scandinavian Airlines
01 Sep - 14 Oct	Austrian Airlines	direct
25 Sep - 10 Oct	Austrian Airlines	direct
28 Sep - 04 Oct	Transavia France

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 $285

Return flights