Cheapest return flights from London to Keflavik in May from $209

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 Icelandair direct
20 May - 24 May Icelandair direct
15 May - 21 May Icelandair direct
13 May - 20 May British Airways direct
08 May - 17 May Icelandair direct
14 May - 17 May Icelandair direct
20 May - 27 May Icelandair direct
04 May - 10 May Lufthansa
29 May - 06 Jun British Airways direct
03 May - 06 May Icelandair direct
10 May - 15 May British Airways direct
25 May - 07 Jun Scandinavian Airlines
25 May - 07 Jun Icelandair direct
25 May - 01 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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