Cheapest return flights from London to Keflavik in April from $128

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

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

Return flights

30 Apr - 04 May Fly Play direct
29 Apr - 07 May Fly Play direct
24 Apr - 29 Apr Fly Play direct
25 Apr - 29 Apr Fly Play direct
24 Apr - 04 May Fly Play direct
22 Apr - 29 Apr Fly Play direct
28 Apr - 04 May Fly Play direct
24 Apr - 28 Apr Fly Play direct
23 Apr - 04 May Fly Play direct
29 Apr - 03 May Fly Play direct
25 Apr - 30 Apr Fly Play direct
22 Apr - 28 Apr Fly Play direct
22 Apr - 30 Apr Fly Play direct
25 Apr - 28 Apr Fly Play direct
23 Apr - 29 Apr Fly Play direct
26 Apr - 29 Apr Fly Play direct
28 Apr - 02 May Fly Play direct
24 Apr - 03 May Fly Play direct
30 Apr - 09 May Fly Play direct
28 Apr - 10 May Fly Play direct

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

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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