Cheapest one-way flights from London to Keflavik in September from $118

AirHint found the following cheapest one-way flights from London (LHR) to Keflavik (KEF) in September 2026 (see full year).

One-Way flights

13 Sep British Airways direct
17 Sep British Airways direct
14 Sep British Airways direct
24 Sep Scandinavian Airlines
05 Sep Scandinavian Airlines
24 Sep British Airways direct
06 Sep Scandinavian Airlines
06 Sep Icelandair direct
05 Sep Icelandair direct

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

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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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