Cheapest return flights from Frankfurt to Keflavik in September from 208€

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

24 Sep - 02 Oct Ryanair
25 Sep - 01 Oct Ryanair
11 Sep - 15 Sep Ryanair
11 Sep - 12 Sep Ryanair
15 Sep - 24 Sep Ryanair
17 Sep - 30 Sep Ryanair
17 Sep - 01 Oct Ryanair
13 Sep - 17 Sep Ryanair
18 Sep - 01 Oct Ryanair
04 Sep - 05 Sep Ryanair
04 Sep - 07 Sep Ryanair
11 Sep - 19 Sep Ryanair
15 Sep - 18 Sep Ryanair
18 Sep - 30 Sep Ryanair
29 Sep - 10 Oct Ryanair
27 Sep - 03 Oct Ryanair
25 Sep - 14 Oct Scandinavian Airlines
28 Sep - 05 Oct Ryanair
24 Sep - 01 Oct British Airways
24 Sep - 03 Oct British Airways

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik