Cheapest return flights from London to Keflavik in April from 300€

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 April 2025 (see full year).

Return flights

30 Apr - 08 May SWISS
02 Apr - 05 Apr Air Dolomiti
03 Apr - 05 Apr Lufthansa
30 Apr - 06 May SWISS
09 Apr - 15 Apr Lufthansa
03 Apr - 10 Apr Lufthansa
27 Apr - 15 May Lufthansa
27 Apr - 01 May Lufthansa
29 Apr - 06 May British Airways
27 Apr - 30 Apr British Airways
28 Apr - 01 May Lufthansa
27 Apr - 06 May Lufthansa
30 Apr - 05 May SWISS
12 Apr - 19 Apr ITA Airways
01 Apr - 05 Apr Lufthansa
08 Apr - 15 Apr British Airways
29 Apr - 08 May Air Dolomiti
09 Apr - 12 Apr SWISS
04 Apr - 10 Apr Lufthansa
25 Apr - 01 May British Airways

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

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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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