Cheapest return flights from London to Keflavik in May from 172€

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

Return flights

21 May - 11 Jun Scandinavian Airlines
10 May - 12 May British Airways direct
03 May - 07 May British Airways direct
03 May - 05 May British Airways direct
02 May - 07 May British Airways direct
12 May - 15 May British Airways direct
12 May - 16 May British Airways direct
09 May - 12 May British Airways direct
03 May - 06 May British Airways direct
02 May - 11 May Icelandair direct
20 May - 29 May Icelandair direct
26 May - 04 Jun Scandinavian Airlines
26 May - 02 Jun British Airways direct
29 May - 03 Jun Scandinavian Airlines
29 May - 02 Jun British Airways direct
30 May - 02 Jun British Airways direct
31 May - 04 Jun Scandinavian Airlines
31 May - 03 Jun Scandinavian Airlines
29 May - 03 Jun British Airways direct
26 May - 04 Jun British Airways direct

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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