AirHint found the following cheapest return flights from London (STN) to Keflavik (KEF) in October 2026 (see full year).

Return flights

11 Oct - 16 Oct	Ryanair
19 Oct - 25 Oct	Ryanair
19 Oct - 24 Oct	Ryanair
12 Oct - 16 Oct	Ryanair
13 Oct - 18 Oct	Ryanair
07 Oct - 10 Oct	Ryanair
20 Oct - 24 Oct	Ryanair
11 Oct - 14 Oct	Ryanair
19 Oct - 23 Oct	Ryanair
03 Oct - 10 Oct	Ryanair
26 Oct - 06 Nov	Ryanair
26 Oct - 05 Nov	Ryanair
26 Oct - 03 Nov	Ryanair
26 Oct - 08 Nov	Ryanair
30 Oct - 08 Nov	Ryanair
27 Oct - 08 Nov	Ryanair
26 Oct - 04 Nov	Ryanair
26 Oct - 07 Nov	Ryanair
28 Oct - 08 Nov	Ryanair
29 Oct - 08 Nov	Ryanair

Also check the deals for one-way flights from London to Keflavik 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 London to Keflavik in October from 150€

Return flights