Cheapest return flights from Chicago to Toronto in September from 131€

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

Return flights

15 Sep - 17 Sep Air Canada direct
03 Sep - 05 Sep Air Canada direct
22 Sep - 24 Sep Air Canada direct
29 Sep - 01 Oct Air Canada direct
15 Sep - 18 Sep United direct
06 Sep - 20 Sep Air Canada direct
03 Sep - 14 Sep United direct
25 Sep - 30 Sep Air Canada direct
05 Sep - 08 Sep Air Canada direct
04 Sep - 09 Sep Air Canada direct
06 Sep - 06 Oct Air Canada direct
19 Sep - 22 Sep Air Canada direct

Also check the deals for one-way flights from Chicago to Toronto in September.

Skyscanner

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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