Cheapest one-way flights from London to Keflavik in September from 98€

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 September 2025 (see full year).

One-Way flights

04 Sep Scandinavian Airlines
25 Sep British Airways direct
18 Sep Scandinavian Airlines
11 Sep Scandinavian Airlines
07 Sep British Airways direct
02 Sep Scandinavian Airlines
28 Sep Scandinavian Airlines
11 Sep British Airways direct
26 Sep British Airways direct
12 Sep Scandinavian Airlines

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

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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