Map of flight path and driving directions from Chicago to Dayton.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Dayton International Airport (DAY).
How far is Dayton from Chicago?
There are several ways to calculate distances between Chicago and Dayton. Here are two common methods:Vincenty's formula (applied above)
- 240.199 miles
- 386.562 kilometers
- 208.727 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
- 239.913 miles
- 386.103 kilometers
- 208.479 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 Dayton is 1 hour. Dayton is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 60 kg (133 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Dayton (DAY).