Cheapest return flights from Montreal to Chicago in October from $173

AirHint found the following cheapest return flights from Montreal (YUL) to Chicago (ORD) in October 2025 (see full year).

Return flights

13 Oct - 20 Oct Air Canada direct
22 Oct - 28 Oct Air Canada direct
26 Oct - 02 Nov Air Canada direct
27 Oct - 03 Nov Air Canada direct
28 Oct - 04 Nov Air Canada direct
29 Oct - 05 Nov Air Canada direct
30 Oct - 06 Nov Air Canada direct
31 Oct - 07 Nov Air Canada direct
31 Oct - 03 Nov Air Canada direct
31 Oct - 02 Nov Air Canada direct
28 Oct - 03 Nov Air Canada direct
29 Oct - 02 Nov Air Canada direct
04 Oct - 11 Oct Air Canada direct
05 Oct - 12 Oct Air Canada direct
08 Oct - 15 Oct Air Canada direct
12 Oct - 19 Oct Air Canada direct
14 Oct - 21 Oct Air Canada direct
15 Oct - 22 Oct Air Canada direct
16 Oct - 23 Oct Air Canada direct
20 Oct - 27 Oct Air Canada direct

Also check the deals for one-way flights from Montreal to Chicago in October.

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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