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

Return flights

25 Sep - 28 Sep	easyJet
03 Sep - 08 Sep	Vueling Airlines
04 Sep - 11 Sep	easyJet
24 Sep - 28 Sep	easyJet
25 Sep - 07 Oct	easyJet
25 Sep - 01 Oct	LOT
11 Sep - 17 Sep	LOT
10 Sep - 17 Sep	easyJet
20 Sep - 09 Oct	easyJet
13 Sep - 24 Sep	Vueling Airlines
17 Sep - 24 Sep	easyJet
15 Sep - 22 Sep	LOT
17 Sep - 21 Sep	easyJet
27 Sep - 05 Oct	easyJet
23 Sep - 05 Oct	easyJet
19 Sep - 06 Oct	easyJet
20 Sep - 05 Oct	easyJet
25 Sep - 02 Oct	Eurowings
28 Sep - 05 Oct	LOT
26 Sep - 05 Oct	easyJet

Also check the deals for one-way flights from Munich 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 Munich to Keflavik in September from 248€

Return flights