Cheapest return flights from London to Keflavik in May from $178

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

17 May - 23 May British Airways direct
17 May - 18 May British Airways direct
11 May - 18 May British Airways direct
10 May - 18 May British Airways direct
18 May - 24 May British Airways direct
18 May - 23 May British Airways direct
12 May - 14 May Scandinavian Airlines
17 May - 19 May Scandinavian Airlines
13 May - 14 May Scandinavian Airlines
15 May - 21 May Scandinavian Airlines
30 May - 02 Jun British Airways direct
29 May - 02 Jun British Airways direct
31 May - 04 Jun Icelandair direct
31 May - 06 Jun British Airways
31 May - 05 Jun Icelandair direct
22 May - 02 Jun Eurowings
30 May - 04 Jun British Airways
31 May - 08 Jun Lufthansa
31 May - 08 Jun Icelandair direct
27 May - 11 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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