Cheapest return flights from London to Keflavik in December from $119

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

10 Dec - 13 Dec Fly Play direct
02 Dec - 09 Dec Fly Play direct
04 Dec - 07 Dec Fly Play direct
02 Dec - 05 Dec Fly Play direct
05 Dec - 07 Dec Fly Play direct
08 Dec - 13 Dec Fly Play direct
07 Dec - 11 Dec Fly Play direct
09 Dec - 13 Dec Fly Play direct
05 Dec - 08 Dec Fly Play direct
08 Dec - 12 Dec Fly Play direct
14 Dec - 14 Jan Fly Play direct
27 Dec - 06 Jan Fly Play direct
27 Dec - 07 Jan Fly Play direct
30 Dec - 01 Jan Fly Play direct
29 Dec - 01 Jan Fly Play direct
31 Dec - 04 Jan Fly Play direct
27 Dec - 01 Jan Fly Play direct
30 Dec - 04 Jan Fly Play direct
31 Dec - 03 Jan Fly Play direct
29 Dec - 03 Jan Fly Play direct

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

Skyscanner

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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