Cheapest return flights from London to Keflavik in August from 399€

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 August 2025 (see full year).

Return flights

22 Aug - 26 Aug SWISS
20 Aug - 26 Aug SWISS
06 Aug - 15 Aug SWISS
25 Aug - 02 Sep SWISS
25 Aug - 27 Aug KLM
18 Aug - 22 Aug SWISS
06 Aug - 12 Aug SWISS
20 Aug - 01 Sep KLM
22 Aug - 28 Aug SWISS
22 Aug - 29 Aug SWISS
07 Aug - 19 Aug SWISS
29 Aug - 01 Sep KLM
29 Aug - 03 Sep KLM
23 Aug - 28 Aug SWISS
30 Aug - 05 Sep KLM
26 Aug - 02 Sep KLM
31 Aug - 07 Sep Lufthansa
27 Aug - 01 Sep SWISS
24 Aug - 03 Sep KLM
31 Aug - 10 Sep KLM

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

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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