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

AirHint found the following cheapest return flights from Chicago (MDW) to Montreal (YUL) in September 2026 (see full year).

Return flights

02 Sep - 03 Sep Porter Airlines (Canada) Ltd
02 Sep - 07 Sep Porter Airlines (Canada) Ltd
02 Sep - 09 Sep Porter Airlines (Canada) Ltd
02 Sep - 13 Sep Porter Airlines (Canada) Ltd
02 Sep - 15 Sep Porter Airlines (Canada) Ltd
02 Sep - 17 Sep Porter Airlines (Canada) Ltd
02 Sep - 21 Sep Porter Airlines (Canada) Ltd
02 Sep - 23 Sep Porter Airlines (Canada) Ltd
02 Sep - 04 Sep Porter Airlines (Canada) Ltd
02 Sep - 06 Sep Porter Airlines (Canada) Ltd
10 Sep - 01 Oct Porter Airlines (Canada) Ltd
14 Sep - 01 Oct Porter Airlines (Canada) Ltd
14 Sep - 05 Oct Porter Airlines (Canada) Ltd
14 Sep - 02 Oct Porter Airlines (Canada) Ltd
14 Sep - 04 Oct Porter Airlines (Canada) Ltd
16 Sep - 01 Oct Porter Airlines (Canada) Ltd
16 Sep - 05 Oct Porter Airlines (Canada) Ltd
16 Sep - 07 Oct Porter Airlines (Canada) Ltd
16 Sep - 02 Oct Porter Airlines (Canada) Ltd
16 Sep - 04 Oct Porter Airlines (Canada) Ltd

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

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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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