Cheapest return flights from London to Keflavik in August from $298

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

Return flights

30 Aug - 07 Sep British Airways
28 Aug - 03 Sep Scandinavian Airlines
27 Aug - 03 Sep Scandinavian Airlines
28 Aug - 04 Sep Scandinavian Airlines
29 Aug - 07 Sep British Airways
30 Aug - 05 Sep Lufthansa
30 Aug - 03 Sep British Airways
30 Aug - 04 Sep British Airways
29 Aug - 03 Sep British Airways
29 Aug - 04 Sep British Airways
25 Aug - 27 Aug Scandinavian Airlines
26 Aug - 28 Aug Scandinavian Airlines
24 Aug - 25 Aug Austrian Airlines
24 Aug - 28 Aug British Airways
24 Aug - 26 Aug British Airways
24 Aug - 27 Aug British Airways
28 Aug - 30 Aug British Airways direct
25 Aug - 30 Aug Austrian Airlines
27 Aug - 30 Aug SWISS
25 Aug - 31 Aug Austrian Airlines

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.