Cheapest return flights from Chicago to Montreal in September from 118€

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

Return flights

15 Sep - 22 Sep Porter Airlines (Canada) Ltd
10 Sep - 16 Sep Porter Airlines (Canada) Ltd
05 Sep - 08 Sep Porter Airlines (Canada) Ltd
18 Sep - 22 Sep Porter Airlines (Canada) Ltd
15 Sep - 06 Oct Porter Airlines (Canada) Ltd
16 Sep - 06 Oct Porter Airlines (Canada) Ltd
17 Sep - 06 Oct Porter Airlines (Canada) Ltd
18 Sep - 06 Oct Porter Airlines (Canada) Ltd
19 Sep - 06 Oct Porter Airlines (Canada) Ltd
21 Sep - 06 Oct Porter Airlines (Canada) Ltd
22 Sep - 06 Oct Porter Airlines (Canada) Ltd
23 Sep - 06 Oct Porter Airlines (Canada) Ltd
24 Sep - 06 Oct Porter Airlines (Canada) Ltd
25 Sep - 06 Oct Porter Airlines (Canada) Ltd
10 Sep - 11 Sep Porter Airlines (Canada) Ltd
10 Sep - 12 Sep Porter Airlines (Canada) Ltd
10 Sep - 14 Sep Porter Airlines (Canada) Ltd
10 Sep - 18 Sep Porter Airlines (Canada) Ltd
10 Sep - 19 Sep Porter Airlines (Canada) Ltd
10 Sep - 21 Sep Porter Airlines (Canada) Ltd

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

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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