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

Return flights

29 Sep - 16 Oct	Air Canada
15 Sep - 23 Sep	United
16 Sep - 23 Sep	Air Canada
15 Sep - 22 Sep	United
24 Sep - 29 Sep	Air Canada
29 Sep - 27 Oct	Air Canada
25 Sep - 28 Sep	Air Canada
26 Sep - 28 Sep	Lufthansa
19 Sep - 21 Sep	Air Canada
30 Sep - 03 Oct	Lufthansa
26 Sep - 03 Oct	Air Canada
10 Sep - 18 Sep	Air Canada
10 Sep - 10 Oct	United
09 Sep - 17 Sep	Delta
11 Sep - 18 Sep	United
09 Sep - 04 Oct	United
30 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 512€

Return flights