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

Return flights

07 Dec - 11 Dec	Ryanair
08 Dec - 12 Dec	easyJet
06 Dec - 13 Dec	Ryanair
09 Dec - 10 Dec	easyJet
05 Dec - 09 Dec	Ryanair
21 Dec - 31 Dec	Ryanair
08 Dec - 19 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
24 Dec - 31 Dec	Volotea
06 Dec - 05 Jan	Ryanair
21 Dec - 29 Dec	Ryanair
22 Dec - 04 Jan	Volotea
30 Dec - 04 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
29 Dec - 04 Jan	Volotea
26 Dec - 04 Jan	Ryanair
27 Dec - 05 Jan	Volotea
27 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Marseille 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 Marseille to Keflavik in December from 219€

Return flights