Cheapest one-way flights from London to Keflavik in April from $85

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 April 2025 (see full year).

One-Way flights

23 Apr British Airways direct
24 Apr British Airways direct
25 Apr British Airways direct
26 Apr British Airways direct
01 Apr Scandinavian Airlines
07 Apr Scandinavian Airlines
06 Apr Scandinavian Airlines
20 Apr Austrian Airlines
22 Apr Austrian Airlines
15 Apr Austrian Airlines

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

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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