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

Return flights

27 Sep - 28 Sep	Flair Airlines	direct
04 Sep - 07 Sep	Flair Airlines	direct
04 Sep - 06 Sep	Flair Airlines	direct
23 Sep - 23 Oct	Flair Airlines	direct
02 Sep - 06 Sep	Flair Airlines	direct
11 Sep - 18 Sep	Flair Airlines	direct
13 Sep - 22 Sep	Delta	direct
04 Sep - 08 Sep	Air Canada	direct
27 Sep - 01 Oct	Air Canada	direct
05 Sep - 07 Sep	Flair Airlines	direct
10 Sep - 14 Sep	Delta	direct
26 Sep - 29 Sep	Delta	direct
15 Sep - 06 Oct	Delta	direct
29 Sep - 11 Oct	jetBlue
29 Sep - 11 Oct	Delta	direct

Also check the deals for one-way flights from New York to Toronto 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 Toronto in September from $115

Return flights