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

Return flights

08 Dec - 12 Dec	KLM
04 Dec - 12 Dec	KLM
12 Dec - 17 Dec	Ryanair
19 Dec - 11 Jan	Ryanair
05 Dec - 12 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
05 Dec - 09 Dec	Ryanair
03 Dec - 05 Dec	Transavia France
13 Dec - 15 Dec	Ryanair
12 Dec - 14 Dec	Ryanair
07 Dec - 12 Dec	KLM
31 Dec - 07 Jan	Ryanair
31 Dec - 10 Jan	Ryanair
20 Dec - 05 Jan	Ryanair
31 Dec - 06 Jan	LOT
29 Dec - 01 Jan	Scandinavian Airlines
30 Dec - 06 Jan	Scandinavian Airlines
25 Dec - 06 Jan	KLM
25 Dec - 01 Jan	KLM
20 Dec - 04 Jan	Ryanair

Also check the deals for one-way flights from Vienna to Keflavik in December.

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 December from $249

Return flights