# Distance between St Louis, MO (STL) and Ottawa (YOW)

Flight distance from St Louis to Ottawa (St. Louis Lambert International Airport – Ottawa Macdonald–Cartier International Airport) is 880 miles / 1416 kilometers / 765 nautical miles. Estimated flight time is 2 hours 9 minutes.

Driving distance from St Louis (STL) to Ottawa (YOW) is 1023 miles / 1646 kilometers and travel time by car is about 18 hours 59 minutes.

## 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).

## Airport information

A St. Louis Lambert International Airport
City: St Louis, MO
Country: United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″W

B Ottawa Macdonald–Cartier International Airport
City: Ottawa
IATA Code: YOW
ICAO Code: CYOW
Coordinates: 45°19′20″N, 75°40′9″W

## 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.

CDT

EDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 142 kg (313 pounds).

## Frequent Flyer Miles Calculator

St Louis (STL) → Ottawa (YOW).

Distance:
880
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
880

Round trip?