Cheap flights from Toronto to Chicago from £109

The cheapest month to fly to Chicago from Toronto is in January. Flight prices, which tend to average around £189, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Chicago from Toronto during September instead. Flights to Chicago in September, while not as cheap as those in January, still average around £194.

The cheapest day to depart on your flight to Chicago is on a Friday when prices can be found for as low as £236. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Sunday, with ticket prices averaging around £789.

Flying to Chicago from Toronto in the evening is the least expensive time of day to depart. momondo users have found prices as low as £210 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £529.

Fly from Toronto Island to Chicago Midway for the best Toronto - Chicago flight prices

You are more likely to see cheaper flights to Chicago from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £229 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Toronto for as low as £131 on momondo.

There are 4 cabin classes available to choose from on Toronto to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 14% of flights between Toronto and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 136 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

The number of flights available between Toronto and Chicago is 63 per day as of July 2026. The most frequent departure time is 13:00, with 45% of daily flights leaving in the afternoon.

As of July 2026, 443 flights take off from Toronto and land in Chicago each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.