Cheapest return flights from London to Keflavik in August from $225

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

Return flights

28 Aug - 06 Sep Scandinavian Airlines
11 Aug - 13 Aug Scandinavian Airlines
11 Aug - 14 Aug Scandinavian Airlines
27 Aug - 10 Sep British Airways
30 Aug - 06 Sep Icelandair
30 Aug - 10 Sep Icelandair direct
30 Aug - 07 Sep Icelandair direct
11 Aug - 15 Aug Scandinavian Airlines
29 Aug - 07 Sep Icelandair direct
30 Aug - 06 Sep Icelandair direct
31 Aug - 07 Sep Icelandair direct
30 Aug - 14 Sep Lufthansa
29 Aug - 04 Sep Scandinavian Airlines
11 Aug - 19 Aug Scandinavian Airlines
06 Aug - 10 Aug Scandinavian Airlines
06 Aug - 12 Aug Scandinavian Airlines
06 Aug - 07 Aug Scandinavian Airlines
11 Aug - 24 Aug Scandinavian Airlines
26 Aug - 27 Aug Scandinavian Airlines
11 Aug - 17 Aug Scandinavian Airlines

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

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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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