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

Return flights

30 Sep - 17 Oct	easyJet	direct
28 Sep - 17 Oct	easyJet	direct
30 Sep - 09 Oct	easyJet
28 Sep - 02 Oct	easyJet
29 Sep - 17 Oct	easyJet	direct
30 Sep - 10 Oct	Ryanair	direct
30 Sep - 21 Oct	easyJet	direct
30 Sep - 16 Oct	easyJet	direct
30 Sep - 02 Oct	easyJet	direct
28 Sep - 09 Oct	easyJet
23 Sep - 28 Sep	Ryanair	direct
23 Sep - 26 Sep	Ryanair	direct
23 Sep - 29 Sep	Ryanair
28 Sep - 30 Sep	easyJet	direct
24 Sep - 28 Sep	Ryanair	direct
21 Sep - 25 Sep	easyJet	direct
24 Sep - 29 Sep	Ryanair
17 Sep - 25 Sep	Ryanair	direct
24 Sep - 26 Sep	Jet2
17 Sep - 19 Sep	Ryanair	direct

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