Cheapest return flights from Montreal to Chicago in September from 110€

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

Return flights

03 Sep - 10 Sep Porter Airlines (Canada) Ltd
05 Sep - 12 Sep Porter Airlines (Canada) Ltd
07 Sep - 14 Sep Porter Airlines (Canada) Ltd
09 Sep - 16 Sep Porter Airlines (Canada) Ltd
11 Sep - 18 Sep Porter Airlines (Canada) Ltd
15 Sep - 22 Sep Porter Airlines (Canada) Ltd
17 Sep - 24 Sep Porter Airlines (Canada) Ltd
19 Sep - 26 Sep Porter Airlines (Canada) Ltd
23 Sep - 30 Sep Porter Airlines (Canada) Ltd
04 Sep - 11 Sep Porter Airlines (Canada) Ltd
25 Sep - 02 Oct Porter Airlines (Canada) Ltd
29 Sep - 06 Oct Porter Airlines (Canada) Ltd
24 Sep - 01 Oct Porter Airlines (Canada) Ltd
26 Sep - 03 Oct Porter Airlines (Canada) Ltd
15 Sep - 02 Oct Porter Airlines (Canada) Ltd
15 Sep - 06 Oct Porter Airlines (Canada) Ltd
15 Sep - 01 Oct Porter Airlines (Canada) Ltd
15 Sep - 03 Oct Porter Airlines (Canada) Ltd
15 Sep - 05 Oct Porter Airlines (Canada) Ltd
03 Sep - 02 Oct Porter Airlines (Canada) Ltd

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