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

Return flights

08 Sep - 23 Sep	Transavia France
13 Sep - 16 Sep	Wizz Air
20 Sep - 25 Sep	easyJet
14 Sep - 23 Sep	Ryanair
30 Sep - 09 Oct	Ryanair
01 Sep - 08 Sep	Norwegian
01 Sep - 30 Sep	Ryanair
15 Sep - 20 Sep	Transavia France
05 Sep - 13 Sep	Norwegian Air Sweden AOC
02 Sep - 09 Sep	Ryanair
04 Sep - 11 Sep	Transavia France
25 Sep - 01 Oct	easyJet
26 Sep - 03 Oct	easyJet
27 Sep - 04 Oct	Ryanair
27 Sep - 05 Oct	easyJet
28 Sep - 05 Oct	Ryanair
26 Sep - 11 Oct	easyJet
26 Sep - 06 Oct	easyJet
28 Sep - 12 Oct	Ryanair
24 Sep - 03 Oct	Scandinavian Airlines

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 204€

Return flights