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

Return flights

29 Sep - 11 Oct	easyJet	direct
29 Sep - 08 Oct	easyJet	direct
27 Sep - 11 Oct	easyJet	direct
17 Sep - 22 Sep	easyJet	direct
29 Sep - 01 Oct	easyJet	direct
15 Sep - 17 Sep	easyJet	direct
15 Sep - 22 Sep	easyJet	direct
10 Sep - 17 Sep	easyJet	direct
17 Sep - 24 Sep	easyJet	direct
10 Sep - 15 Sep	easyJet	direct
27 Sep - 01 Oct	easyJet	direct
13 Sep - 22 Sep	easyJet	direct
13 Sep - 15 Sep	easyJet	direct
08 Sep - 15 Sep	easyJet	direct
22 Sep - 24 Sep	easyJet	direct
29 Sep - 02 Oct	easyJet
30 Sep - 04 Oct	easyJet
27 Sep - 05 Oct	easyJet
26 Sep - 01 Oct	Icelandair	direct
30 Sep - 01 Oct	easyJet

Also check the deals for one-way flights from Edinburgh 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 Edinburgh to Keflavik in September from $124

Return flights