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

Return flights

06 Dec - 12 Dec	Ryanair
02 Dec - 09 Dec	Ryanair
24 Dec - 28 Dec	LOT
29 Dec - 05 Jan	Ryanair
23 Dec - 26 Dec	Ryanair
30 Dec - 02 Jan	Ryanair
20 Dec - 23 Dec	Ryanair
26 Dec - 30 Dec	Ryanair
27 Dec - 03 Jan	Ryanair
28 Dec - 02 Jan	Ryanair
30 Dec - 03 Jan	Ryanair
27 Dec - 05 Jan	Ryanair
27 Dec - 02 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 $271

Return flights