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

Return flights

01 Dec - 06 Dec	easyJet
06 Dec - 13 Dec	easyJet
03 Dec - 10 Dec	easyJet
08 Dec - 15 Dec	easyJet
08 Dec - 11 Dec	easyJet
03 Dec - 06 Dec	easyJet
02 Dec - 15 Dec	Wizz Air UK
10 Dec - 20 Dec	easyJet
04 Dec - 11 Dec	easyJet
16 Dec - 20 Dec	Wizz Air UK
24 Dec - 01 Jan	LOT
27 Dec - 05 Jan	Jet2
23 Dec - 01 Jan	easyJet
28 Dec - 05 Jan	easyJet
26 Dec - 05 Jan	LOT
29 Dec - 06 Jan	LOT
23 Dec - 03 Jan	easyJet
31 Dec - 03 Jan	easyJet
28 Dec - 04 Jan	easyJet
27 Dec - 02 Jan	Jet2

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 162€

Return flights