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

Return flights

17 Nov - 21 Nov	KLM
26 Nov - 28 Nov	KLM
10 Nov - 17 Nov	KLM
05 Nov - 10 Nov	KLM
10 Nov - 16 Nov	KLM
19 Nov - 23 Nov	KLM
17 Nov - 23 Nov	KLM
18 Nov - 21 Nov	British Airways
19 Nov - 26 Nov	KLM
18 Nov - 24 Nov	KLM
26 Nov - 01 Dec	KLM
29 Nov - 03 Dec	KLM
29 Nov - 01 Dec	KLM
28 Nov - 01 Dec	KLM
29 Nov - 02 Dec	KLM
27 Nov - 02 Dec	KLM
30 Nov - 03 Dec	British Airways

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

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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Cheapest return flights from London to Keflavik in November from 277€

Return flights