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

Return flights

02 Dec - 04 Dec	easyJet
09 Dec - 13 Dec	easyJet
02 Dec - 06 Dec	easyJet
09 Dec - 11 Dec	easyJet
06 Dec - 09 Dec	easyJet
11 Dec - 13 Dec	easyJet
04 Dec - 09 Dec	easyJet
08 Dec - 13 Dec	easyJet
11 Dec - 16 Dec	easyJet
31 Dec - 06 Jan	easyJet
31 Dec - 11 Jan	easyJet
09 Dec - 15 Dec	easyJet
18 Dec - 05 Jan	easyJet
31 Dec - 05 Jan	easyJet
29 Dec - 11 Jan	Scandinavian Airlines
30 Dec - 12 Jan	Scandinavian Airlines
26 Dec - 06 Jan	easyJet
18 Dec - 05 Jan	Icelandair	direct
31 Dec - 04 Jan	Scandinavian Airlines
30 Dec - 06 Jan	easyJet

Also check the deals for one-way flights from Paris 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 Paris to Keflavik in December from 176€

Return flights