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

Return flights

18 Sep - 23 Sep	Lufthansa
24 Sep - 01 Oct	KLM
17 Sep - 24 Sep	KLM
22 Sep - 01 Oct	easyJet
29 Sep - 01 Oct	easyJet
25 Sep - 01 Oct	KLM
23 Sep - 01 Oct	easyJet
16 Sep - 01 Oct	easyJet
22 Sep - 30 Sep	easyJet
15 Sep - 24 Sep	easyJet
22 Sep - 04 Oct	easyJet
23 Sep - 30 Sep	easyJet
18 Sep - 21 Sep	Lufthansa
18 Sep - 22 Sep	KLM
29 Sep - 06 Oct	easyJet
18 Sep - 25 Sep	Lufthansa
25 Sep - 03 Oct	KLM
15 Sep - 20 Sep	easyJet
11 Sep - 17 Sep	KLM
09 Sep - 23 Oct	easyJet

Also check the deals for one-way flights from Milan 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 Milan to Keflavik in September from $276

Return flights