AirHint found the following cheapest one-way flights from Montreal (YUL) to Chicago (ORD) in June 2025 (see full year).

One-Way flights

28 Jun	American Airlines
20 Jun	Delta
30 Jun	Air Canada	direct
30 Jun	Porter Airlines (Canada) Ltd
21 Jun	Delta
29 Jun	Air Canada
22 Jun	Air Canada
29 Jun	Air Canada	direct
13 Jun	Air Canada	direct
21 Jun	Air Canada	direct

Also check the deals for return flights from Montreal to Chicago in June.

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 Montreal to Chicago in June from $165

One-Way flights