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

Return flights

07 Oct - 16 Oct	Ryanair
12 Oct - 15 Oct	Ryanair
14 Oct - 21 Oct	Ryanair
12 Oct - 18 Oct	Ryanair
19 Oct - 22 Oct	Ryanair
22 Oct - 25 Oct	Ryanair
17 Oct - 20 Oct	Ryanair
10 Oct - 17 Oct	Ryanair
13 Oct - 27 Oct	Ryanair
15 Oct - 18 Oct	Ryanair
31 Oct - 03 Nov	easyJet
31 Oct - 06 Nov	easyJet
30 Oct - 03 Nov	Jet2
31 Oct - 04 Nov	Ryanair
22 Oct - 08 Nov	Ryanair
01 Oct - 01 Nov	Ryanair
25 Oct - 01 Nov	Ryanair
29 Oct - 07 Nov	Jet2
25 Oct - 01 Nov	Jet2	direct
28 Oct - 02 Nov	easyJet

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 160€

Return flights