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

Return flights

21 Sep - 25 Sep	easyJet	direct
11 Sep - 25 Sep	easyJet	direct
14 Sep - 21 Sep	easyJet	direct
21 Sep - 28 Sep	easyJet	direct
07 Sep - 16 Sep	easyJet
11 Sep - 16 Sep	easyJet
07 Sep - 11 Sep	easyJet	direct
25 Sep - 06 Oct	easyJet	direct
28 Sep - 02 Oct	easyJet	direct
14 Sep - 17 Sep	easyJet
27 Sep - 02 Oct	Ryanair
18 Sep - 21 Sep	easyJet	direct
22 Sep - 02 Oct	Ryanair
21 Sep - 24 Sep	easyJet
28 Sep - 05 Oct	easyJet	direct
29 Sep - 06 Oct	easyJet
28 Sep - 06 Oct	easyJet	direct
28 Sep - 01 Oct	easyJet
27 Sep - 06 Oct	Ryanair
25 Sep - 07 Oct	Ryanair

Also check the deals for one-way flights from Manchester 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 Manchester to Keflavik in September from $136

Return flights