Cheapest return LCY–KEF flights, April

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

Return flights

20 Apr - 27 Apr Lufthansa
20 Apr - 10 May KLM
20 Apr - 23 Apr Lufthansa
20 Apr - 25 Apr Lufthansa
24 Apr - 26 Apr SWISS
20 Apr - 24 Apr KLM
24 Apr - 28 Apr SWISS
20 Apr - 28 Apr Lufthansa
20 Apr - 30 Apr Lufthansa
22 Apr - 26 Apr Lufthansa
30 Apr - 31 May KLM
30 Apr - 07 May KLM
27 Apr - 04 May Lufthansa
24 Apr - 29 Apr British Airways
29 Apr - 03 May Lufthansa
29 Apr - 06 May SWISS
27 Apr - 02 May Lufthansa
28 Apr - 05 May KLM
28 Apr - 03 May KLM
30 Apr - 05 May KLM

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

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