Cheapest return flights from London to Keflavik in October from $196

Best time to book flights for London (LHR) to Keflavik (KEF) flights at AirHint

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

Return flights

01 Oct - 15 Oct Icelandair direct
28 Oct - 04 Nov Icelandair direct
31 Oct - 04 Nov Icelandair direct
12 Oct - 15 Oct Icelandair direct
02 Oct - 06 Oct Icelandair direct
04 Oct - 06 Oct Icelandair direct
01 Oct - 05 Oct Icelandair direct
01 Oct - 06 Oct Icelandair direct
05 Oct - 15 Oct Icelandair direct
01 Oct - 07 Oct Icelandair direct
07 Oct - 15 Oct Icelandair direct
03 Oct - 06 Oct Icelandair direct
31 Oct - 03 Nov British Airways direct
27 Oct - 08 Nov Scandinavian Airlines
27 Oct - 08 Nov Icelandair direct
31 Oct - 02 Nov British Airways direct
30 Oct - 02 Nov Icelandair direct
24 Oct - 01 Nov Icelandair direct
28 Oct - 03 Nov Scandinavian Airlines
30 Oct - 01 Nov Scandinavian Airlines

Also check the deals for one-way 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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