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

Return flights

28 Oct - 04 Nov	easyJet
15 Oct - 19 Oct	easyJet
04 Oct - 07 Oct	Wizz Air
12 Oct - 19 Oct	Wizz Air
11 Oct - 19 Oct	Wizz Air
02 Oct - 05 Oct	Wizz Air
25 Oct - 30 Oct	Wizz Air
28 Oct - 04 Nov	easyJet	direct
15 Oct - 19 Oct	easyJet	direct
12 Oct - 19 Oct	easyJet	direct
17 Oct - 19 Oct	easyJet
11 Oct - 18 Oct	Wizz Air

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

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 Keflavik to London in October from 102€

Return flights