AirHint found the following cheapest one-way flights from Chicago (ORD) to Toronto (YYZ) in August 2025 (see full year).

One-Way flights

12 Aug	Air Canada	direct
26 Aug	Air Canada	direct
07 Aug	Air Canada	direct
06 Aug	Air Canada	direct
08 Aug	Air Canada	direct
15 Aug	United	direct
21 Aug	Air Canada	direct
13 Aug	United	direct
25 Aug	Air Canada	direct
23 Aug	Air Canada	direct

Also check the deals for return flights from Chicago to Toronto in August.

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 one-way flights from Chicago to Toronto in August from 55€

One-Way flights