Montreal → Chicago flights: the normal price, and when to book

Here is what a return trip to Chicago usually costs. Above $314 you are paying the going rate; below it, you have a deal.

Usual price$314
Excellent deal below$197
Lowest ever recorded$270

Last recorded on September 13, 2026, across 1590 observations from the past 90 days.

By cabin

  • Economy$328

Price movement

From September 11, 2026 to September 13, 2026, across 3 days of observations: $297 at the lowest, $321 at the highest. Each dot is an observed day; gaps between dots were not measured.

Get told when the price drops

Set an alert on this route: we watch continuously and write to you the moment a fare goes below $197.