Cheapest return flights from London to Keflavik in May from 169€

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

30 May - 04 Jun British Airways direct
14 May - 21 May Icelandair direct
01 May - 14 May Icelandair direct
06 May - 16 May Icelandair direct
01 May - 25 May Icelandair direct
03 May - 10 May Icelandair direct
06 May - 14 May Icelandair direct
06 May - 13 May Icelandair direct
09 May - 16 May Icelandair direct
07 May - 10 May Icelandair direct
01 May - 07 May Icelandair direct
31 May - 08 Jun British Airways direct
30 May - 08 Jun British Airways direct
03 May - 11 Jun Icelandair direct
28 May - 11 Jun Icelandair direct
31 May - 06 Jun Icelandair direct
22 May - 03 Jun Scandinavian Airlines
16 May - 06 Jun Icelandair direct
30 May - 06 Jun British Airways direct
30 May - 03 Jun British Airways

Also check the deals for one-way flights from London to Keflavik in May.

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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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