Cheapest return flights from London to Keflavik in April from 171€

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

Return flights

12 Apr - 22 Apr British Airways direct
01 Apr - 08 Apr Scandinavian Airlines
22 Apr - 29 Apr British Airways direct
01 Apr - 15 Apr Scandinavian Airlines
01 Apr - 06 Apr Scandinavian Airlines
26 Apr - 29 Apr British Airways direct
07 Apr - 14 Apr Scandinavian Airlines
14 Apr - 18 Apr Scandinavian Airlines
02 Apr - 06 Apr Scandinavian Airlines
23 Apr - 28 Apr Scandinavian Airlines
16 Apr - 02 May British Airways direct

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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