Map of flight path and driving directions from Chicago to Saint John.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Saint John Airport (YSJ).
How far is Saint John from Chicago?
There are several ways to calculate distances between Chicago and Saint John. Here are two common methods:Vincenty's formula (applied above)
- 1123.669 miles
- 1808.370 kilometers
- 976.442 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
- 1120.789 miles
- 1803.736 kilometers
- 973.939 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 Saint John is 2 hours. Saint John is 2 hours ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 158 kg (348 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Saint John (YSJ).