Cheapest return flights from London to Keflavik in May from $216

AirHint found the following cheapest return flights from London (LHR) to Keflavik (KEF) in May 2026 (see full year).

Return flights

06 May - 13 May British Airways direct
04 May - 13 May Icelandair direct
13 May - 20 May Icelandair direct
13 May - 22 May Icelandair direct
27 May - 31 May Icelandair direct
23 May - 31 May Icelandair direct
17 May - 29 May Icelandair direct
18 May - 21 May Icelandair direct
30 May - 06 Jun British Airways direct
27 May - 03 Jun Scandinavian Airlines
15 May - 19 May Icelandair direct
28 May - 31 May Icelandair direct
26 May - 02 Jun Scandinavian Airlines
26 May - 02 Jun Icelandair direct
31 May - 14 Jun Icelandair direct
28 May - 08 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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