Toronto to Chicago is a classic short-haul business hop — barely two hours in the air and served all day long by multiple carriers. It is also one of the few routes where the downtown-to-downtown option genuinely competes: Porter’s flights from the island airport to Chicago Midway can beat the big Pearson-to-O’Hare operators on total door-to-door time. Fares stay low year-round thanks to steady competition and heavy frequency.
Distance: ~700 km (436 miles) YYZ–ORD
Non-stop flight time: ~2h 00m (YTZ–MDW ~1h 50m)
Direct flights: Yes — Air Canada, United, and American fly Pearson–O’Hare nonstop; Porter flies Billy Bishop–Midway nonstop.
Fares from Toronto to Chicago (CAD)
This is a business-and-visiting-friends route rather than a seasonal sun run, so demand is steadier and fares are far less volatile than a Caribbean route. Prices firm up around summer travel and the winter holidays, and soften in the January–February lull and the autumn shoulder. With more than 20 nonstop departures a day between the airports, there is almost always a reasonable fare on offer. The ranges below are indicative economy returns.
| Month | Typical return (CAD) | Demand |
|---|---|---|
| January | C$ 160 – 280 | Low |
| February | C$ 170 – 300 | Low |
| March | C$ 200 – 340 | Moderate |
| April | C$ 200 – 340 | Moderate |
| May | C$ 220 – 370 | Moderate |
| June | C$ 260 – 430 | High |
| July | C$ 260 – 440 | High |
| August | C$ 250 – 420 | High |
| September | C$ 210 – 350 | Moderate |
| October | C$ 200 – 340 | Moderate |
| November | C$ 200 – 350 | Moderate |
| December | C$ 240 – 430 | High |
Checked against every return fare on sale as we write, this route costs about twice what it is usually quoted at — worth knowing before you dismiss a real price as poor. Nothing sold below C$ 302, the median is C$ 373, and four fifths of the hundred cheapest fares sit between C$ 334 and C$ 375. So anything under about C$ 334 is a solid deal, not C$ 200. That floor is Air Canada, with United at C$ 361–373. Check the live price before booking.
Airlines on this route
- Non-stop
- Air Canada — the frequency leader, with all-day nonstops from Pearson to O’Hare (ORD), and the price leader in our fare check: C$ 302–458 return on 93 of the hundred lowest fares, including the floor.
- United Airlines — multiple daily nonstops Pearson–O’Hare, feeding its large Chicago hub, at C$ 361–373 in our check.
- American Airlines — nonstop Pearson–O’Hare, useful for oneworld connections onward.
- Porter Airlines — nonstop from Billy Bishop (YTZ) to Chicago Midway (MDW), the downtown-to-downtown option.
- One-stop (rarely needed here)
- Various carriers connect via a US or Canadian hub, but with this many nonstops a one-stop itinerary is almost never worth the extra time on such a short route.
When to book & how to save
- Book 3–6 weeks ahead for the best short-haul pricing; last-minute fares on this business route can spike sharply.
- Choose your airport pair deliberately: Billy Bishop–Midway (Porter) is faster to reach from downtown Toronto and lands closer to the Chicago Loop, while Pearson–O’Hare offers more frequencies and onward connections.
- Fly Tuesday, Wednesday, or Saturday to dodge the Monday-morning and Thursday/Friday-evening business peaks.
- Watch the fare basis for bags — basic economy on the US carriers restricts carry-on and seat selection; Porter’s fares tend to include more.
- Travel in January, February, or the autumn shoulder for the lowest fares; summer and December cost the most.
Arriving in Chicago
Most Pearson flights land at O’Hare International (ORD), about 27 km northwest of downtown. The CTA Blue Line train runs directly from the O’Hare station into the Loop for USD 5–7 (about C$ 7–10) in roughly 45 minutes — the cheapest and often fastest option in traffic. A taxi or rideshare downtown runs about USD 45–60 (about C$ 60–85). Porter flights arrive at Chicago Midway (MDW), around 16 km southwest of downtown, where the CTA Orange Line reaches the Loop in about 25 minutes for the same low fare. Remember US customs and immigration is cleared before departure at both Toronto airports, so you arrive in Chicago as a domestic passenger.
Frequently asked questions
How long is the flight from Toronto to Chicago?
The nonstop flight from Toronto Pearson to Chicago O’Hare takes about 2 hours. Porter’s service from Billy Bishop to Chicago Midway is marginally shorter at around 1 hour 50 minutes. Actual gate-to-gate times vary a little with wind and air-traffic sequencing into the busy Chicago airspace.
Are there direct flights from Toronto to Chicago?
Yes, many. Air Canada, United, and American fly nonstop from Pearson (YYZ) to O’Hare (ORD), and Porter flies nonstop from Billy Bishop (YTZ) to Midway (MDW). Between the airport pairs there are more than 20 nonstop departures a day, so you rarely need to consider a connection.
How much does a flight to Chicago cost from Toronto?
Indicative economy returns run about C$ 334–375, median C$ 373, with the cheapest we found at C$ 302 on Air Canada and the dearest non-stop at C$ 458. That is a late-summer sample; the December holidays sit at the top of it. United ran C$ 361–373.
What is the cheapest month to fly to Chicago?
January and February are usually the cheapest, with the autumn shoulder (late October and November) close behind. In the dates we could price, non-stop returns started at C$ 302. Summer and December are the priciest, driven by leisure travel and holiday demand rather than any weather premium.
Which airlines fly nonstop to Chicago from Toronto?
Air Canada, United, and American operate nonstop from Pearson to O’Hare, and Porter flies nonstop from Billy Bishop to Midway. Air Canada carries the most frequencies overall and held 93 of the hundred cheapest fares at C$ 302–458, with United at C$ 361–373; Porter offers the downtown-to-downtown alternative for travellers based in central Toronto, on a different airport pair we did not price.
Which airport do I fly into in Chicago?
It depends on the carrier. Pearson flights land at O’Hare (ORD), Chicago’s main international hub northwest of the city, reachable by the CTA Blue Line. Porter flights from Billy Bishop land at Midway (MDW), southwest of downtown and served by the CTA Orange Line.
How far in advance should I book?
For this short business route, 3–6 weeks ahead is the sweet spot. Fares are relatively stable but climb steeply in the final days before departure, especially around weekday business peaks, so avoid booking last-minute if you can plan ahead.
Is it cheaper to fly on weekdays?
Midweek days like Tuesday and Wednesday, and Saturday, are usually cheapest. The costliest departures are Monday mornings and Thursday or Friday evenings, when business travellers dominate. Shifting your times off those peaks is one of the easiest ways to cut the fare on this route.
Fare guidance based on aifly.one deal tracking and current airline schedules; last reviewed July 2026. Indicative economy returns — check the live fare before booking.
