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

Return flights

25 Sep - 28 Sep	easyJet
25 Sep - 03 Oct	Delta
19 Sep - 24 Sep	easyJet
18 Sep - 20 Sep	easyJet
21 Sep - 28 Sep	Ryanair
19 Sep - 21 Sep	Ryanair
20 Sep - 27 Sep	easyJet
21 Sep - 23 Sep	Ryanair
20 Sep - 20 Sep	easyJet
21 Sep - 26 Sep	Aer Lingus

Also check the deals for one-way flights from Belfast to New York 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.

Book a cheap hotel in New York

Cheap car rent in New York

Cheapest return flights from Belfast to New York in September from $544

Return flights