Cheapest return flights from London to Keflavik in May from 375€

Best time to book flights for London (LCY) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from London (LCY) to Keflavik (KEF) in May 2025 (see full year).

Return flights

02 May - 15 May Lufthansa
14 May - 18 May SWISS
08 May - 15 May Lufthansa
16 May - 18 May Lufthansa
05 May - 18 May Lufthansa
15 May - 20 May British Airways
16 May - 19 May Lufthansa
06 May - 13 May British Airways
12 May - 26 May Lufthansa
08 May - 12 May Lufthansa
30 May - 07 Jun Air Dolomiti
28 May - 18 Jun KLM
29 May - 03 Jun KLM
29 May - 02 Jun KLM
31 May - 01 Jun KLM
29 May - 01 Jun KLM
27 May - 01 Jun KLM
27 May - 03 Jun Lufthansa
25 May - 01 Jun KLM
24 May - 01 Jun KLM

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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