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

Return flights

26 Sep - 06 Oct	Fly Play	direct
26 Sep - 10 Oct	Fly Play	direct
17 Sep - 24 Sep	Fly Play	direct
12 Sep - 29 Sep	Fly Play	direct
21 Sep - 29 Sep	Fly Play	direct
26 Sep - 01 Oct	Fly Play	direct
20 Sep - 24 Sep	Ryanair
27 Sep - 03 Oct	easyJet
01 Sep - 10 Sep	easyJet
04 Sep - 10 Sep	easyJet
18 Sep - 24 Sep	easyJet
05 Sep - 07 Sep	Ryanair
03 Sep - 08 Sep	Fly Play	direct
10 Sep - 17 Sep	Fly Play	direct
30 Sep - 08 Oct	easyJet
29 Sep - 05 Oct	Fly Play	direct
26 Sep - 05 Oct	Fly Play	direct
26 Sep - 02 Oct	Ryanair
24 Sep - 04 Oct	easyJet
28 Sep - 11 Oct	Ryanair

Also check the deals for one-way flights from Berlin to Keflavik in September.

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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Cheapest return flights from Berlin to Keflavik in September from 194€

Return flights