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

Return flights

28 Sep - 17 Oct	easyJet	direct
21 Sep - 17 Oct	easyJet	direct
28 Sep - 22 Oct	easyJet	direct
30 Sep - 11 Oct	Ryanair
24 Sep - 09 Oct	Jet2
30 Sep - 07 Oct	Ryanair
20 Sep - 17 Oct	easyJet	direct
30 Sep - 10 Oct	Ryanair	direct
30 Sep - 11 Oct	Ryanair	direct
28 Sep - 03 Oct	easyJet
21 Sep - 24 Sep	Ryanair
24 Sep - 30 Sep	Jet2
23 Sep - 29 Sep	Ryanair
21 Sep - 25 Sep	easyJet	direct
20 Sep - 24 Sep	easyJet	direct
20 Sep - 26 Sep	easyJet	direct
17 Sep - 19 Sep	Ryanair	direct
24 Sep - 28 Sep	Jet2
21 Sep - 24 Sep	easyJet	direct
22 Sep - 24 Sep	easyJet

Also check the deals for one-way flights from Belfast to Alicante 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 Belfast to Alicante in September from 98€

Return flights