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

Return flights

08 Dec - 13 Dec	easyJet
06 Dec - 12 Dec	easyJet
01 Dec - 07 Dec	Ryanair
08 Dec - 19 Dec	easyJet
13 Dec - 15 Dec	easyJet
14 Dec - 20 Dec	easyJet
05 Dec - 07 Dec	Ryanair
18 Dec - 23 Dec	Ryanair
19 Dec - 27 Dec	Ryanair
20 Dec - 27 Dec	Ryanair
29 Dec - 03 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
27 Dec - 04 Jan	Ryanair
30 Dec - 04 Jan	Brussels Airlines
26 Dec - 01 Jan	Ryanair
27 Dec - 03 Jan	Ryanair
26 Dec - 04 Jan	Ryanair
26 Dec - 03 Jan	Ryanair
27 Dec - 02 Jan	Ryanair
26 Dec - 02 Jan	Brussels Airlines

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 172€

Return flights