Cheapest return flights from Chicago to Montreal in December from 261€

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

Return flights

04 Dec - 07 Dec Air Canada
02 Dec - 05 Dec Spirit Airlines
01 Dec - 04 Dec Spirit Airlines
12 Dec - 14 Dec Air Canada direct
11 Dec - 14 Dec Air Canada direct
04 Dec - 07 Dec Air Canada direct
01 Dec - 04 Dec Air Canada direct
06 Dec - 13 Dec Air Canada direct
24 Dec - 31 Dec Frontier Airlines
06 Dec - 08 Dec Delta
13 Dec - 03 Jan Frontier Airlines
29 Dec - 03 Jan WestJet
26 Dec - 02 Jan WestJet
28 Dec - 02 Jan WestJet
28 Dec - 02 Jan Air Canada direct
13 Dec - 03 Jan Air Canada direct
26 Dec - 02 Jan United direct
29 Dec - 03 Jan Air Canada direct

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

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