C$203 Cheap Flights from Montreal (YMQA) to Chicago O'Hare International (ORD)

Compare Montreal to Chicago O'Hare International flight deals

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

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Flight deals from Montreal to Chicago O'Hare International

Looking for a cheap last-minute deal or the best return flight from Montreal to Chicago O'Hare International Airport? If you want to travel next month, return fares start from C$364. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Montreal to Chicago O'Hare International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Montreal to Chicago O'Hare International flights are currently cheapest in May.

Which airlines fly from Montreal to Chicago O'Hare International?

Montreal to Chicago O'Hare International: Alternative routes

Compare routes from Montreal to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

Montreal to Chicago: Flight information

The things to know before you go.
Cheapest flight foundC$203
Cheapest month to flyMay
Average flight time2 hrs, 43 mins
Most popular airlineAir Canada
Average flights per week306

Finding cheap flights from Montreal to Chicago O'Hare International: Frequently asked questions

The best price we found for a return flight from Montreal to Chicago O'Hare International is C$360. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 43 minutes is the average flight time from Montreal to Chicago O'Hare International.
Air Canada, United and Jazz Air fly direct from Montreal to Chicago O'Hare International.
As of April 2026, there are 306 flights per week flying from Montreal to Chicago O'Hare International.
The cheapest month to fly from Montreal to Chicago O'Hare International is usually June.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Montreal to Chicago O'Hare International Airport on Thursday, June 11, 2026.
Yes – the average flight time is 2 hours and 43 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago O'Hare International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Chicago O'Hare International is Air Canada .

Flying from Montreal to O'Hare International Airport (ORD): what you need to know

  • Montreal-Pierre Elliott Trudeau International Airport (YUL) is Montreal's main airport. Explore your options for booking a flight from Montreal to O'Hare International Airport (ORD) departing from here.

  • Expect to be in the air for 2 hours 39 minutes. That's the average time for a direct flight from Montreal to O'Hare International Airport.

  • O'Hare International Airport is located in Chicago. The city operates in the UTC-5 timezone and is 1 hour behind Montreal.

  • With 63 direct flights a week between the two airports, Montreal-Pierre Elliott Trudeau International Airport (YUL) to O'Hare International Airport (ORD) is the busiest route. United operates the earliest flight at 06:00. If you'd like to make the most of your day before you fly, the latest departure from YUL to ORD is with Air Canada at 19:45.

  • Arrive at the airport on time so you don't miss your flight from Montreal to ORD. Be there at least two hours ahead for international flights and an hour early for domestic departures to skip the mad dash to your gate.

  • Show up at the airport even earlier during popular months like August. Aim for two hours before a domestic departure and as much as four hours for an international flight. Once you've checked in, you can use any extra time to grab something to eat or simply relax.

Airports in Montreal

Montreal-Pierre Elliott Trudeau International Airport (YUL)

  • Montreal-Pierre Elliott Trudeau International Airport (YUL) is a convenient option for travelling directly to your destination. Nonstop flights from Montreal to O'Hare International Airport (ORD) depart from this terminal.

  • Popular carriers that have direct flights from Montreal to O'Hare International Airport departing YUL include:

  • YUL is about 26 kilometres from central Montreal. To work out how to get there, use Google Maps. This handy traveller tool will show you the quickest route and available public transport options.

  • Have an early flight from Montreal to O'Hare International Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra snooze time) by choosing one of these stays close to Montreal-Pierre Elliott Trudeau International Airport:

About O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • O'Hare International Airport is approximately 40 kilometres from the centre of Chicago. With your own car rental or if you're catching a cab, the drive is about 35 minutes.

  • It takes around 54 minutes to get there using public transport.

How to find the cheapest flights from Montreal to O'Hare International Airport (ORD)

  • For a one-way ticket from Montreal to O'Hare International Airport, C$203 is the best price we've seen. You can also book a return trip from just C$360. These are currently the lowest fares and may vary based on availability.

  • To score flight tickets from Montreal to ORD, book your journey 8 months before your departure.

  • May is the cheapest month for tickets from Montreal to O'Hare International Airport. If you need to travel during a different time of year, use the 'Whole month' search feature to see the lowest prices across every month.

  • Create a Price Alert for flight tickets from Montreal to ORD. There's no need to check back in every day to see if prices have dropped. We'll update you when the price changes.

  • Use the filters to tailor your flights from Montreal to O'Hare International Airport. Simply enter your preferred departure and arrival times, airlines and number of stops. You can also sort your results by 'Cheapest' to see the best deals.

The best time to fly from Montreal to O'Hare International Airport (ORD)

  • It's time to plan your travel dates for your flight from Montreal to O'Hare International Airport. August is the busiest month to visit Chicago. If you like a quieter vibe, go in February.

  • Think about the kind of weather that'll work with your plans for Chicago. July is known as the warmest month. Book your flights from Montreal to ORD sometime then and you can expect temperatures of between 15ºC and 29ºC.

  • Visit in January for cooler conditions. Average temperatures range between -12ºC and 3ºC. However, this city delivers on a good time whenever you book your cheap flights from Montreal to O'Hare International Airport.

More about Chicago

Complete your Chicago trip with a car rental

  • Finding you a cheap flight from Montreal to O'Hare International Airport isn't the only trick up our sleeve. Check out our car rentals in Chicago and explore on your own terms. We search for deals from trusted car rental companies and put them all in one place. Instantly compare offers and then book with no fees.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.