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

Return flights

27 Sep - 30 Sep	Vueling Airlines
23 Sep - 01 Oct	easyJet
13 Sep - 23 Sep	Iberia
16 Sep - 23 Sep	Vueling Airlines
27 Sep - 05 Oct	Vueling Airlines
24 Sep - 01 Oct	Ryanair
23 Sep - 02 Oct	easyJet
13 Sep - 18 Sep	Iberia
27 Sep - 04 Oct	Ryanair
18 Sep - 23 Sep	Vueling Airlines
09 Sep - 20 Sep	Ryanair
25 Sep - 02 Oct	easyJet
09 Sep - 13 Sep	Ryanair
27 Sep - 10 Oct	Ryanair
16 Sep - 21 Sep	Vueling Airlines
25 Sep - 01 Oct	Ryanair
18 Sep - 21 Sep	Vueling Airlines
06 Sep - 11 Sep	Vueling Airlines
26 Sep - 04 Oct	Vueling Airlines
27 Sep - 11 Oct	Ryanair

Also check the deals for one-way flights from Alicante 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 Alicante to Keflavik in September from 200€

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