Cheapest return flights from London to Keflavik in August from $158

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

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

Return flights

31 Aug - 14 Sep Fly Play direct
30 Aug - 07 Sep Fly Play direct
27 Aug - 01 Sep Fly Play direct
24 Aug - 01 Sep Fly Play direct
30 Aug - 03 Sep Fly Play direct
29 Aug - 01 Sep Fly Play direct
26 Aug - 03 Sep Fly Play direct
27 Aug - 03 Sep Fly Play direct
24 Aug - 03 Sep Fly Play direct
31 Aug - 02 Sep Fly Play direct
24 Aug - 30 Aug Fly Play direct
27 Aug - 29 Aug Fly Play direct
24 Aug - 29 Aug Fly Play direct
26 Aug - 30 Aug Fly Play direct
24 Aug - 27 Aug Fly Play direct
25 Aug - 30 Aug Fly Play direct
26 Aug - 28 Aug Fly Play direct
19 Aug - 23 Aug easyJet
15 Aug - 18 Aug Fly Play direct
17 Aug - 20 Aug Fly Play direct

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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