Cheap flights from Chicago to Montreal

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Flight deals from Chicago to Montreal

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Find the cheapest month to fly from Chicago to Montreal

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

Direct flights from Chicago to Montreal

Alternative Chicago to Montreal routes

Looking for the cheapest, fastest or easiest route from Chicago to Montreal? You could fly into the following airports instead.

Chicago to Montreal: Flight information

The things to know before you go.
Cheapest flight foundC$416
Cheapest month to flyMay
Average flight time2 hrs, 19 mins
Most popular airlineUnited
Average flights per week222

Finding cheap flights from Chicago to Montreal: Frequently asked questions

There are 3 airports in Montreal: Montreal St Hubert, Montreal Pierre Elliott Trudeau and Montreal Mirabel.
The best price we found for a round-trip flight from Chicago to Montreal is C$416. 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 19 minutes is the average flight time from Chicago to Montreal.
United, Air Canada and American Airlines fly direct from Chicago to Montreal.
There are 812 flights per week flying from Chicago to Montreal, as of April 2024.
The cheapest month to fly from Chicago to Montreal is usually May.
If you're flying from Chicago, the cheapest airport near Montreal is Montreal Pierre Elliott Trudeau – which is 16.1 km away from the center of Montreal. We've found flights to this airport from C$416.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Montreal on Monday, May 20, 2024.
Yes – the average flight time is 2 hours and 19 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 Montreal 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 Montreal is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 5°C. July is typically the warmest month in Montreal, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -17°C. The rainiest month is June.
The cheapest airline that flies to Montreal is Porter Airlines (Canada) Ltd, and the cheapest airline that flies to Montreal Pierre Elliott Trudeau Airport is Air Canada.

Flight Information

Air Canada, WestJet, American Airlines, and United have direct flights from Chicago to Montreal. All other flights to Montreal from Chicago make one stop, most commonly at Toronto Pearson International Airport or Billy Bishop Toronto City Airport.

Terminal Information for Chicago O'Hare International Airport

Chicago O'Hare International Airport is the sixth-busiest airport in the world by number of passengers. Security lines to clear TSA can sometimes take as long as two hours, so O'Hare International Airport recommends that passengers arrive at the airport at least three hours ahead of their flight. The airport periodically tweets updates about the length of TSA security lines.

Chicago O'Hare International Airport offers travellers many transportation options to the airport, including taxis, limousines, shuttles, buses, rental cars, and trains.

Terminal Information for Montréal–Pierre Elliott Trudeau International Airport

Passengers who would like to pick up some duty-free items at Montréal–Pierre Elliott Trudeau International Airport will find the duty-free store in the international terminal at gate 63. Passengers can drop by to browse or pre-order duty-free items online and pick them up upon arrival at the airport.

Also at gate 63 is the new Desjardins Odyssey Lounge. The lounge is open to any traveller, and reservations can be made in advance but aren't required. The lounge offers free snacks and refreshments, wine and beer, international newspapers, free Wi-Fi, and a children's corner with toys and books. The lounge has about 160 seats. 

What You Need to Know

For passengers on flights to Montreal from Chicago, it's important to have a valid passport. Both American and Canadian citizens are required to show a valid, non-expired passport at the border. Passports must also be valid for the entire duration of the travellers' time abroad. 

There is a one-hour time difference between Chicago and Montreal. Passengers should be sure to reset their watches one hour forward on Chicago to Montreal flights.

What to Expect in Montreal

After arriving in Montreal, travellers can take either a taxi or a bus into downtown Montreal. The 747 bus system runs 24 hours a day, seven days a week. Travel time on the bus is between 45 and 60 minutes, depending on traffic. The CA$10 ticket is valid for 24 hours. A taxi from the airport into downtown will cost CA$40.

Visitors to Montreal should be sure to check out the Jean-Talon Market. As one of the largest outdoor markets in North America, visitors are sure to be pleased by the fresh produce, pastries, and other delicacies for sale. 

If visitors are travelling in Montreal during the winter, the Underground City is a great place to escape the cold. The Underground City is a network of underground tunnels and hallways that connect the office buildings, hotels, museums, performance halls, and universities of Montreal's central business district. The underground passageways are lined with shops and restaurants, so there's plenty to do when escaping the cold. 

If the weather is pleasant in Montreal, a stroll through Vieux-Montréal, or Old Montreal, is a good way to enjoy the sites. There's a popular shopping area and lots of historic buildings to please visitors in Vieux-Montréal. 


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