Cheapest return flights from London to Keflavik in May from $193

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

Return flights

09 May - 16 May Icelandair direct
23 May - 27 May Icelandair direct
20 May - 27 May Icelandair direct
20 May - 29 May Icelandair direct
16 May - 21 May Icelandair direct
18 May - 21 May Icelandair direct
02 May - 09 May Icelandair direct
02 May - 06 May Icelandair direct
05 May - 11 May Icelandair direct
06 May - 12 May Icelandair direct
25 May - 01 Jun Icelandair direct
31 May - 13 Jun British Airways direct
24 May - 03 Jun Icelandair direct
31 May - 12 Jun British Airways direct
31 May - 15 Jun Austrian Airlines
30 May - 07 Jun British Airways direct
31 May - 14 Jun British Airways direct
31 May - 16 Jun Icelandair direct
28 May - 11 Jun Icelandair direct
31 May - 15 Jun Icelandair 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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