Cheapest return flights from London to Keflavik in May from 237€

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

Return flights

04 May - 10 May Lufthansa
16 May - 26 May ITA Airways
16 May - 27 May ITA Airways
06 May - 10 May Lufthansa
25 May - 31 May ITA Airways
08 May - 14 May Lufthansa
15 May - 19 May SWISS
04 May - 07 May Lufthansa
01 May - 07 May Lufthansa
22 May - 26 May SWISS
31 May - 07 Jun Air Dolomiti

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.

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