Map of flight path and driving directions from St Louis to Ottawa.
Shortest flight path between St. Louis Lambert International Airport (STL) and Ottawa Macdonald–Cartier International Airport (YOW).
How far is Ottawa from St Louis?
There are several ways to calculate distances between St Louis and Ottawa. Here are two common methods:Vincenty's formula (applied above)
- 880.005 miles
- 1416.231 kilometers
- 764.703 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
- 878.572 miles
- 1413.924 kilometers
- 763.458 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 St Louis and Ottawa is 1 hour. Ottawa is 1 hour ahead of St Louis.
St Louis, MO
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 142 kg (313 pounds).
Frequent Flyer Miles Calculator
St Louis (STL) → Ottawa (YOW).