Cheapest return flights from London to Keflavik in May from 165€

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

Return flights

06 May - 15 May Icelandair direct
11 May - 15 May Icelandair direct
12 May - 15 May Icelandair direct
06 May - 20 May Icelandair direct
12 May - 19 May Icelandair direct
08 May - 23 May Icelandair direct
06 May - 23 May Icelandair direct
07 May - 23 May Icelandair direct
13 May - 20 May Icelandair direct
02 May - 06 May Icelandair direct
30 May - 07 Jun Icelandair
28 May - 02 Jun Icelandair
27 May - 02 Jun Icelandair
30 May - 02 Jun Icelandair direct
27 May - 02 Jun Icelandair direct
28 May - 12 Jun Icelandair direct
30 May - 04 Jun Icelandair direct
30 May - 03 Jun Icelandair direct
29 May - 02 Jun Icelandair
29 May - 04 Jun Icelandair

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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