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

Return flights

12 Dec - 17 Dec	easyJet
15 Dec - 20 Dec	easyJet
06 Dec - 11 Dec	easyJet
05 Dec - 11 Dec	easyJet
01 Dec - 07 Dec	easyJet
15 Dec - 21 Dec	easyJet
23 Dec - 31 Dec	Wizz Air UK
22 Dec - 29 Dec	easyJet
15 Dec - 25 Dec	easyJet
15 Dec - 23 Dec	easyJet
23 Dec - 01 Jan	Wizz Air UK
22 Dec - 03 Jan	easyJet
29 Dec - 01 Jan	easyJet
28 Dec - 03 Jan	easyJet
28 Dec - 02 Jan	easyJet
27 Dec - 03 Jan	easyJet
29 Dec - 03 Jan	easyJet
26 Dec - 03 Jan	easyJet

Also check the deals for one-way flights from Lyon 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 Lyon to Keflavik in December from 135€

Return flights