Cheapest return flights from London to Keflavik in December from 235€

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

Return flights

03 Dec - 07 Dec KLM
04 Dec - 07 Dec KLM
11 Dec - 15 Dec KLM
10 Dec - 15 Dec KLM
04 Dec - 08 Dec KLM
03 Dec - 10 Dec KLM
02 Dec - 07 Dec KLM
10 Dec - 07 Jan KLM
02 Dec - 08 Dec KLM
01 Dec - 05 Dec KLM
11 Dec - 17 Dec KLM
18 Dec - 07 Jan KLM
31 Dec - 05 Jan KLM
24 Dec - 26 Jan KLM
29 Dec - 07 Jan KLM
29 Dec - 05 Jan KLM
16 Dec - 06 Jan Aer Lingus
31 Dec - 01 Jan KLM
24 Dec - 02 Jan SWISS
29 Dec - 04 Jan KLM

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

Powered by

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.