Cheapest return flights from London to Keflavik in December from 363€

AirHint found the following cheapest return flights from London (LCY) to Keflavik (KEF) in December 2026 (see full year).

Return flights

09 Dec - 16 Dec KLM
18 Dec - 06 Jan ITA Airways
15 Dec - 21 Dec ITA Airways
08 Dec - 16 Dec ITA Airways
11 Dec - 14 Dec ITA Airways
11 Dec - 13 Dec SWISS
26 Dec - 30 Dec ITA Airways
23 Dec - 28 Dec KLM
03 Dec - 06 Dec Lufthansa
04 Dec - 07 Dec Aer Lingus
10 Dec - 14 Dec Aer Lingus
17 Dec - 06 Jan KLM

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

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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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