Map of flight path and driving directions from Chicago to Ottawa.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Ottawa Macdonald–Cartier International Airport (YOW).
How far is Ottawa from Chicago?
There are several ways to calculate distances between Chicago and Ottawa. Here are two common methods:Vincenty's formula (applied above)
- 654.544 miles
- 1053.386 kilometers
- 568.783 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 653.056 miles
- 1050.992 kilometers
- 567.490 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Time difference and current local times
The time difference between Chicago and Ottawa is 1 hour. Ottawa is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 119 kg (263 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Ottawa (YOW).