Cheapest return flights from London to Keflavik in December from 316€

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

Return flights

30 Dec - 23 Jan Scandinavian Airlines
30 Dec - 13 Jan British Airways direct
31 Dec - 04 Jan Scandinavian Airlines
31 Dec - 08 Jan British Airways direct
31 Dec - 05 Jan Scandinavian Airlines
29 Dec - 04 Jan Scandinavian Airlines
31 Dec - 01 Jan Scandinavian Airlines
30 Dec - 23 Jan British Airways direct
29 Dec - 31 Dec Scandinavian Airlines
29 Dec - 05 Jan Scandinavian Airlines
30 Dec - 04 Jan Scandinavian Airlines
28 Dec - 31 Dec Scandinavian Airlines
29 Dec - 30 Dec Scandinavian Airlines
28 Dec - 30 Dec Scandinavian Airlines
30 Dec - 30 Dec British Airways
30 Dec - 30 Dec British Airways direct
29 Dec - 30 Dec Icelandair direct
28 Dec - 30 Dec Icelandair direct
28 Dec - 28 Dec Icelandair direct
28 Dec - 31 Dec Icelandair direct

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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