Cheapest one-way flights from London to Keflavik in September from $62

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

AirHint found the following cheapest one-way flights from London (STN) to Keflavik (KEF) in September 2025 (see full year).

One-Way flights

10 Sep Fly Play direct
02 Sep Fly Play direct
18 Sep Fly Play direct
20 Sep Fly Play direct
27 Sep Fly Play direct
28 Sep Fly Play direct
12 Sep Fly Play direct
13 Sep Fly Play direct
07 Sep Fly Play direct
09 Sep Fly Play direct

Also check the deals for return flights from London to Keflavik in September.

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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