Cheapest one-way flights from London to Keflavik in May from $114

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 May 2025 (see full year).

One-Way flights

11 May British Airways direct
10 May British Airways direct
18 May Scandinavian Airlines
22 May Scandinavian Airlines
18 May British Airways direct
29 May Icelandair direct
31 May Icelandair direct
15 May Scandinavian Airlines
21 May Scandinavian Airlines
12 May Scandinavian Airlines

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

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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