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

Return flights

20 Sep - 23 Sep	Ryanair
13 Sep - 23 Sep	Ryanair
27 Sep - 01 Oct	easyJet
03 Sep - 09 Sep	Norwegian
28 Sep - 03 Oct	Ryanair
02 Sep - 10 Sep	easyJet
20 Sep - 28 Sep	Ryanair
26 Sep - 06 Oct	Ryanair
24 Sep - 01 Oct	Ryanair
25 Sep - 03 Oct	LOT
10 Sep - 24 Sep	Ryanair
17 Sep - 01 Oct	Ryanair
10 Sep - 16 Sep	Ryanair
06 Sep - 16 Sep	Ryanair
28 Sep - 05 Oct	Ryanair
26 Sep - 01 Oct	Ryanair
13 Sep - 28 Sep	Ryanair
16 Sep - 23 Sep	easyJet
26 Sep - 05 Oct	Ryanair
27 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 197€

Return flights