Flight distance from Chicago to Ontario in miles and km Show
🧭 Distance
Air distance from Chicago to Ontario is 1,705 miles (2,745 kilometers).
Use our calculator below to find out the how many reward miles you can get for this flight.
⏱ Flight time
Estimated flight time from Chicago to Ontario is 3 hours 36 minutes. Return flight is 1 hours 55 minutes long.
🕐 Local time
Time difference between Chicago and Ontario is 2 hours. Ontario is 2 hours behind of Chicago.
Calculate time difference between Chicago and Ontario using the slider below:
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.
Final amount of award miles you get depends on booking class and program tier level.
Frequent Flyer Miles Calculator
You can expect to get 1,705 flight miles for a flight from Chicago to Ontario. However final amount of miles will depend on frequent flyer program rules, booking class and your level in program.
Airports Information
Chicago
Chicago O'Hare International (ORD)
| Telephone | (800) 832-6352 |
| IATA Code | ORD |
| City | Chicago |
| Country | United States |
| Address | 10000 W O'Hare Ave, Chicago, IL 60666 |
| Distance from ORD to ONT | 1,700 miles (2736 km) |
Chicago Midway (MDW)
| Telephone | (773) 838-0600 |
| IATA Code | MDW |
| City | Chicago |
| Country | United States |
| Address | 5700 S Cicero Ave, Chicago, IL 60638 |
| Distance from MDW to ONT | 1,705 miles (2745 km) |
Chicago Rockford (RFD)
| Telephone | (866) 359-7331 |
| IATA Code | RFD |
| City | Chicago |
| Country | United States |
| Address | 2 Airport Cir, Rockford, IL 61109 |
| Distance from RFD to ONT | 1,642 miles (2643 km) |
Chicago Pal-Waukee (PWK)
| Telephone | (847) 537-2580 |
| IATA Code | PWK |
| City | Chicago |
| Country | United States |
| Address | 1020 Plant Rd, Wheeling, IL 60090 |
| Distance from PWK to ONT | 1,699 miles (2735 km) |
Chicago Dupage County (DPA)
| Telephone | (630) 584-2211 |
| IATA Code | DPA |
| City | Chicago |
| Country | United States |
| Address | 2700 International Dr, West Chicago, IL 60185 |
| Distance from DPA to ONT | 1,682 miles (2707 km) |
Chicago Gary Regional (GYY)
| IATA Code | GYY |
| City | Chicago |
| Country | United States |
| Distance from GYY to ONT | 1,721 miles (2770 km) |
Ontario
Ontario International (ONT)
| Telephone | (909) 544-5300 |
| IATA Code | ONT |
| City | Ontario |
| Country | United States |
| Address | Ontario, CA 91761 |
| Distance from ONT to ORD | 1,700 miles (2736 km) |
| Distance from ONT to MDW | 1,705 miles (2745 km) |
| Distance from ONT to RFD | 1,642 miles (2643 km) |
| Distance from ONT to PWK | 1,699 miles (2735 km) |
| Distance from ONT to DPA | 1,682 miles (2707 km) |
| Distance from ONT to GYY | 1,721 miles (2770 km) |