Cheapest one-way flights from London to Keflavik in October from $124

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

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

One-Way flights

05 Oct British Airways direct
04 Oct British Airways
06 Oct Scandinavian Airlines
31 Oct British Airways direct
13 Oct Scandinavian Airlines
07 Oct Scandinavian Airlines
15 Oct British Airways
01 Oct British Airways
04 Oct British Airways direct
08 Oct British Airways

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

Skyscanner

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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