Cheapest return flights from London to Keflavik in December from $118

Best time to book flights for London (STN) to Keflavik (KEF) flights at AirHint

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

Return flights

01 Dec - 09 Dec Fly Play direct
01 Dec - 05 Dec Fly Play direct
06 Dec - 09 Dec Fly Play direct
10 Dec - 13 Dec Fly Play direct
02 Dec - 04 Dec Fly Play direct
01 Dec - 04 Dec Fly Play direct
04 Dec - 11 Dec Fly Play direct
01 Dec - 03 Dec Fly Play direct
09 Dec - 12 Dec Fly Play direct
08 Dec - 13 Dec Fly Play direct
28 Dec - 10 Jan Fly Play direct
23 Dec - 01 Jan Fly Play direct
30 Dec - 04 Jan Fly Play direct
29 Dec - 04 Jan Fly Play direct
22 Dec - 02 Jan Fly Play direct
30 Dec - 03 Jan Fly Play direct
29 Dec - 02 Jan Fly Play direct
23 Dec - 03 Jan Fly Play direct
26 Dec - 01 Jan Fly Play 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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