Cheapest one-way flights from London to Keflavik in October from $176

AirHint found the following cheapest one-way flights from London (LHR) to Keflavik (KEF) in October 2025 (see full year).

One-Way flights

16 Oct Scandinavian Airlines
30 Oct Icelandair direct
21 Oct Aer Lingus
31 Oct Icelandair direct
29 Oct Vueling Airlines
22 Oct Scandinavian Airlines
17 Oct Scandinavian Airlines
14 Oct Aer Lingus
28 Oct Vueling Airlines
25 Oct Scandinavian Airlines

Also check the deals for return flights from London to Keflavik in October.

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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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