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

Return flights

07 Dec - 14 Dec	easyJet
08 Dec - 15 Dec	easyJet
08 Dec - 21 Dec	easyJet
11 Dec - 15 Dec	easyJet
22 Dec - 04 Jan	easyJet
31 Dec - 04 Jan	easyJet
24 Dec - 02 Jan	easyJet
30 Dec - 02 Jan	easyJet
30 Dec - 03 Jan	easyJet
27 Dec - 02 Jan	easyJet
25 Dec - 02 Jan	KLM
26 Dec - 02 Jan	easyJet

Also check the deals for one-way flights from Nantes 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 Nantes to Keflavik in December from 163€

Return flights