Cheapest return flights from London to Keflavik in May from 182€

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

Return flights

09 May - 24 May Icelandair direct
07 May - 10 May Lufthansa
31 May - 03 Jun British Airways direct
07 May - 17 May Icelandair direct
16 May - 24 May Icelandair direct
15 May - 23 May Icelandair direct
05 May - 08 May Icelandair direct
16 May - 21 May Icelandair direct
13 May - 17 May Icelandair direct
13 May - 19 May Icelandair direct
11 May - 25 May British Airways direct
23 May - 06 Jun Icelandair direct
25 May - 01 Jun Icelandair direct
25 May - 06 Jun Icelandair direct
27 May - 05 Jun British Airways direct

Also check the deals for one-way flights from London to Keflavik in May.

Skyscanner

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.