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

Return flights

30 Oct - 02 Nov	Air Canada
29 Oct - 12 Nov	United	direct
25 Oct - 30 Oct	United
28 Oct - 01 Nov	United
28 Oct - 04 Nov	United
28 Oct - 11 Nov	United
30 Oct - 02 Nov	United	direct
09 Oct - 14 Oct	United
10 Oct - 13 Oct	Porter Airlines (Canada) Ltd

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

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 Quebec to Chicago in October from $193

Return flights