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

Return flights

17 Sep - 25 Sep	KLM
17 Sep - 24 Sep	KLM
24 Sep - 30 Sep	Wizz Air
17 Sep - 23 Sep	Ryanair
16 Sep - 23 Sep	easyJet
25 Sep - 30 Sep	easyJet
03 Sep - 08 Sep	KLM
09 Sep - 20 Sep	Ryanair
27 Sep - 02 Oct	Ryanair
11 Sep - 23 Sep	easyJet
23 Sep - 01 Oct	easyJet
24 Sep - 29 Sep	Ryanair
27 Sep - 01 Oct	Ryanair
19 Sep - 02 Oct	Ryanair
28 Sep - 02 Oct	Ryanair
28 Sep - 03 Oct	Ryanair
28 Sep - 06 Oct	Ryanair
29 Sep - 03 Oct	Ryanair
26 Sep - 03 Oct	Ryanair
28 Sep - 05 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 196€

Return flights