Cheapest return flights from Luxemburg to Keflavik in December from $236

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

Return flights

01 Dec - 11 Dec Ryanair
07 Dec - 12 Dec Ryanair
04 Dec - 12 Dec Ryanair
03 Dec - 06 Dec Ryanair
04 Dec - 13 Dec Ryanair
22 Dec - 27 Dec easyJet
17 Dec - 20 Dec Ryanair
25 Dec - 29 Dec KLM
25 Dec - 28 Dec KLM
23 Dec - 02 Jan Ryanair
25 Dec - 01 Jan KLM
26 Dec - 05 Jan Scandinavian Airlines

Also check the deals for one-way flights from Luxemburg to Keflavik in December.

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