Cheap Flights from Montreal to Illinois from $231 Return

Flight deals from Montreal to Illinois

Looking for cheap tickets from Montreal to Illinois, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Chicago.$160 per passenger.Departing Thu, 12 Mar.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Thu, 12 Mar, arriving in Chicago O'Hare International.Price includes taxes and charges.From $160, select.

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Flying from Montreal to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	$160
Cheapest month to fly	March
Average flight time	2 hrs, 50 mins
Cheapest airport to fly from	Montreal Pierre Elliott Trudeau
Most popular airline	Air Canada

How to find cheap flights from Montreal to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Montreal to Illinois. Other savvy travellers recently found return flights from $231 and one-way tickets from $160 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Montreal Pierre Elliott Trudeau into Chicago O'Hare International

At the moment, the lowest priced flight tickets to Illinois are from Montreal Pierre Elliott Trudeau Airport to Chicago O'Hare International Airport.

Fly in February

We crunched the flight calendar and found the cheapest time to fly from Montreal to Illinois is currently February.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Montreal to anywhere you choose in Illinois.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Montreal to Illinois go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Illinois to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average Montreal to Illinois flight price?

We looked at all of the upcoming return flights from Montreal to Illinois we could find over the next 12 months. It looks like $230 is the best price. This is good, compared to the average Illinois ticket price of $231.

What is the cheapest month to fly from Montreal to Illinois?

The cheapest month to fly from Montreal to Illinois is currently February.

Which upcoming date is cheapest to fly from Montreal to Illinois on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Montreal to Illinois on Tuesday, 10 February 2026.

Are there any direct flights from Montreal to Illinois?

Montreal Pierre Elliott Trudeau Airport offers direct flights to Illinois.

If I'm flying from Montreal, where in Illinois is cheapest to fly into?

If you're flying from Montreal, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International.