Cheapest return flights from London to Keflavik in May from 144€

Best time to book flights for London (LHR) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Keflavik (KEF) in May 2025 (see full year).

Return flights

11 May - 14 May British Airways direct
09 May - 14 May British Airways direct
09 May - 12 May British Airways direct
09 May - 13 May British Airways direct
10 May - 13 May British Airways direct
08 May - 12 May British Airways direct
12 May - 15 May British Airways direct
03 May - 14 May Icelandair direct
03 May - 08 May Icelandair direct
07 May - 14 May Icelandair direct
24 May - 01 Jun Icelandair direct
28 May - 04 Jun Icelandair direct
25 May - 01 Jun Icelandair direct
24 May - 07 Jun Icelandair direct
24 May - 06 Jun Icelandair direct
29 May - 08 Jun Icelandair direct
25 May - 02 Jun Icelandair direct
22 May - 02 Jun Icelandair direct
26 May - 06 Jun Icelandair direct
29 May - 05 Jun Icelandair direct

Also check the deals for one-way 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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