Cheapest return flights from Frankfurt to Keflavik in September from 170€

Best time to book flights for Frankfurt (FRA) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Frankfurt (FRA) to Keflavik (KEF) in September 2025 (see full year).

Return flights

04 Sep - 10 Sep Ryanair
25 Sep - 01 Oct Ryanair
25 Sep - 13 Oct Ryanair
18 Sep - 24 Sep Ryanair
19 Sep - 02 Oct Ryanair
28 Sep - 03 Oct Ryanair
12 Sep - 17 Sep Ryanair
24 Sep - 08 Oct Ryanair
11 Sep - 17 Sep Ryanair
15 Sep - 22 Sep Ryanair
01 Sep - 04 Sep Ryanair
01 Sep - 08 Sep Ryanair
26 Sep - 28 Sep Ryanair
21 Sep - 02 Oct Ryanair
22 Sep - 03 Oct Ryanair
29 Sep - 03 Oct Ryanair
19 Sep - 03 Oct Ryanair
08 Sep - 15 Sep Ryanair
20 Sep - 02 Oct Ryanair
25 Sep - 28 Sep Ryanair

Also check the deals for one-way flights from Frankfurt 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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