Cheapest one-way flights from Chicago to Montreal in December from 106€

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

One-Way flights

01 Dec Frontier Airlines
03 Dec Spirit Airlines
08 Dec Spirit Airlines
02 Dec Spirit Airlines
08 Dec Air Canada direct
03 Dec Air Canada direct
02 Dec Air Canada direct
25 Dec Delta
24 Dec Delta
04 Dec Delta

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

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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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