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

Return flights

10 Dec - 12 Jan	easyJet
09 Dec - 11 Dec	easyJet
09 Dec - 17 Dec	easyJet
04 Dec - 12 Jan	easyJet
06 Dec - 12 Jan	easyJet
15 Dec - 16 Dec	easyJet
15 Dec - 17 Dec	easyJet
31 Dec - 17 Jan	Scandinavian Airlines
02 Dec - 06 Dec	easyJet
03 Dec - 06 Dec	easyJet
05 Dec - 06 Dec	easyJet
06 Dec - 09 Dec	easyJet
09 Dec - 16 Dec	easyJet
04 Dec - 09 Dec	easyJet
06 Dec - 10 Jan	Lufthansa
10 Dec - 12 Jan	Icelandair	direct
31 Dec - 10 Jan	Scandinavian Airlines
14 Dec - 05 Jan	easyJet
20 Dec - 26 Jan	easyJet
31 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 194€

Return flights