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Cheap Flights from Montreal to Chicago

Popular airlines from Montreal to Chicago

You can choose from 1 airlines that fly from Montreal to Chicago, including Air Canada, Air Canada offers the lowest prices on this route.
Air Canada logo Air Canada
Airlines are determined based on actual purchased flight tickets from Montreal to Chicago according to previous 12 months data from Trip.com.

Explore the cheapest flights from Montreal to Chicago in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at S$ 140, and round-trip direct tickets start at S$ 210.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flying from Montreal to Chicago

The distance between Montreal and Chicago is approximately 1,199.75km. It takes around 2 hours 46 minutes on average to fly from Montreal to Chicago. Based on Trip.com's data, travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight priceS$ 129
Cheapest return ticket priceS$ 198
Off-season for travelSeptember
Peak season for travelJuly
Flight distance1,199.75km
Average flight time2 hours 46 minutes
Popular airlineAir Canada
Flight statistics for the Montreal–Chicago route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Montreal to Chicago.

What is the cheapest month for one-way flights from Montreal to Chicago?

The average price of one-way flights from Montreal to Chicago purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Montreal to Chicago is September, with an average price of S$ 229, and the most expensive month is October, with an average price of up to S$ 360.

S$ 360
S$ 295
S$ 229
S$ 164
    Cheapest
  • S$ 280
    Mar
  • S$ 305
    Apr
  • S$ 284
    May
  • S$ 305
    Jun
  • S$ 291
    Jul
  • S$ 234
    Aug
  • S$ 229
    Sep
  • S$ 360
    Oct
  • S$ 285
    Nov
  • S$ 319
    Dec
  • S$ 350
    Jan
  • S$ 266
    Feb

What is the cheapest month for round-trip flights from Montreal to Chicago?

The average price of round-trip flights from Montreal to Chicago purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for round-trip flights from Montreal to Chicago is August, with an average price of S$ 319, and the most expensive month is January, with an average price of up to S$ 487.

S$ 487
S$ 403
S$ 319
S$ 235
    Cheapest
  • S$ 366
    Mar
  • S$ 390
    Apr
  • S$ 402
    May
  • S$ 437
    Jun
  • S$ 345
    Jul
  • S$ 319
    Aug
  • S$ 347
    Sep
  • S$ 470
    Oct
  • S$ 400
    Nov
  • S$ 468
    Dec
  • S$ 487
    Jan
  • S$ 412
    Feb

What is the cheapest day to fly from Montreal to Chicago during Hari Raya Puasa?

Based on Trip.com's data over the past 3 days, these are the lowest one-way airfares from Montreal to Chicago during Hari Raya Puasa.

During Hari Raya Puasa, flights from Montreal to Chicago are cheapest on Mar 20, with the lowest fare of S$ 142.

S$ 342
S$ 242
S$ 142
S$ 42
    Cheapest
  • S$ 319
    Mar 17
  • S$ 158
    Mar 18
  • S$ 254
    Mar 19
  • S$ 142
    Mar 20
  • S$ 342
    Mar 21
  • S$ 242
    Mar 22
  • S$ 170
    Mar 23

Frequently Asked Questions

  • Which airlines offer the cheapest flights from Montreal (YMQ) to Chicago (CHI)?

    Based on Trip.com data, Porter Airlines offers one-way fares as low as S$ 129 on Cheapest nonstop routes (e.g. YUL to MDW on Wed, Apr 22), while Porter Airlines offers Cheapest nonstop round-trips from S$ 198 departing on Thu, Apr 30 and returning on Thu, May 7.
  • At the moment, you can catch a direct flight from Montreal to Chicago with the following airlines, including: Air Canada Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 2 hours 46 minutes to fly from Montreal (YMQ) to Chicago (CHI).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Montreal to Chicago is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 66 flight per week flying from Montreal to Chicago. You can check the weekly schedule for popular airlines on this route below: Air Canada: S/M/T/W/T/F/S -- AC3653 (06:18)
  • To find best deals on flights from Montreal to Chicago, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Apr 22, with one-way flights priced at just S$ 129.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Canada.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Chicago travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Montreal to Chicago is September, when demand for travel is lower.
  • After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Montreal to Chicago on March 17, 2026 with Porter Airlines, with prices starting at S$ 131.
  • You can land at any one of the following hubs in Chicago, with Montreal-Pierre Elliott Trudeau International Airport to O'Hare International Airport (YUL-ORD) is by far the most common option on this route: O'Hare International Airport (ORD) Midway International Airport (MDW) Chicago Rockford International Airport (RFD).
  • The time difference between Chicago and Montreal is 1h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.