Cheapest return flights from Montreal to Chicago in December from $273

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

Return flights

05 Dec - 08 Dec Air Canada direct
04 Dec - 07 Dec Air Canada direct
05 Dec - 07 Dec Porter Airlines (Canada) Ltd direct
05 Dec - 12 Dec Porter Airlines (Canada) Ltd direct
03 Dec - 07 Dec Air Canada direct
02 Dec - 09 Dec Air Canada direct
03 Dec - 10 Dec Air Canada direct
01 Dec - 08 Dec American Airlines
08 Dec - 15 Dec Porter Airlines (Canada) Ltd
04 Dec - 11 Dec Air Canada direct
22 Dec - 07 Jan Air Canada direct
22 Dec - 10 Jan Air Canada direct
27 Dec - 07 Jan Air Canada direct
31 Dec - 07 Jan WestJet
25 Dec - 01 Jan Air Canada direct
26 Dec - 02 Jan Air Canada direct
31 Dec - 07 Jan Air Canada direct
21 Dec - 03 Jan WestJet
27 Dec - 03 Jan WestJet
30 Dec - 06 Jan WestJet

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

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