Cheapest one-way flights from London to Keflavik in September from 99€

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

One-Way flights

26 Sep British Airways direct
25 Sep Icelandair direct
30 Sep Vueling Airlines
29 Sep Vueling Airlines
24 Sep Icelandair direct
23 Sep Icelandair direct
29 Sep Icelandair direct
22 Sep Vueling Airlines
22 Sep British Airways direct
28 Sep Aer Lingus

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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