AirHint found the following cheapest return flights from New York (LGA) to Brussels (BRU) in September 2025 (see full year).

Return flights

10 Sep - 17 Sep	Air Canada
17 Sep - 24 Sep	Air Canada
17 Sep - 25 Sep	Air Canada
14 Sep - 18 Sep	Air Canada
14 Sep - 19 Sep	Air Canada
15 Sep - 07 Oct	Air Canada
30 Sep - 21 Oct	Air Canada
08 Sep - 15 Sep	Air Canada
08 Sep - 16 Sep	Air Canada
10 Sep - 11 Sep	Lufthansa
25 Sep - 30 Sep	Lufthansa
10 Sep - 18 Sep	Air Canada
14 Sep - 04 Oct	Air Canada
27 Sep - 05 Oct	Air Canada
17 Sep - 11 Oct	Air Canada
28 Sep - 18 Oct	Air Canada
16 Sep - 11 Oct	Air Canada
29 Sep - 27 Oct	Air Canada
23 Sep - 18 Oct	Air Canada
25 Sep - 02 Oct	Air Canada

Also check the deals for one-way flights from New York to Brussels 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 New York to Brussels in September from $463

Return flights