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

Return flights

19 Sep - 25 Sep	Spirit Airlines
12 Sep - 18 Sep	Spirit Airlines
24 Sep - 30 Sep	Spirit Airlines
24 Sep - 28 Sep	Spirit Airlines
12 Sep - 14 Sep	Frontier Airlines
21 Sep - 25 Sep	Spirit Airlines
04 Sep - 11 Sep	Spirit Airlines
21 Sep - 24 Sep	Spirit Airlines
04 Sep - 07 Sep	Spirit Airlines
05 Sep - 07 Sep	Frontier Airlines

Also check the deals for one-way flights from Charlotte 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 Charlotte to Toronto in September from 220€

Return flights