Flight distance from Dayton to Chicago (Dayton International Airport – Chicago O"Hare International Airport) is 240 miles / 387 kilometers / 209 nautical miles. Estimated flight time is 57 minutes.

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Driving distance from Dayton (DAY) to Chicago (ORD) is 307 miles / 494 kilometers and travel time by car is about 5 hours 32 minutes.





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Shortest flight path between Dayton International Airport (DAY) and Chicago O"Hare International Airport (ORD).


There are several ways to calculate distances between Dayton and Chicago. Here are two common methods:

Vincenty"s formula (applied above)240.199 miles386.562 kilometers208.727 nautical miles

Vincenty"s formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

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Haversine formula239.913 miles386.103 kilometers208.479 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).


ADayton International Airport
City:Dayton, OH
Country:United States
IATA Code:DAY
ICAO Code:KDAY
Coordinates:39°54′8″N, 84°13′9″W

BChicago O"Hare International Airport
City:Chicago, IL
Country:United States
IATA Code:ORD
ICAO Code:KORD
Coordinates:41°58′42″N, 87°54′17″W

Dayton to Chicago distance (DAY to MDW)
Dayton to Rockford distance (DAY to RFD)
Dayton to Milwaukee distance (DAY to MKE)
Dayton to South Bend distance (DAY to SBN)
Dayton to Madison distance (DAY to MSN)
Dayton to Bloomington distance (DAY to BMI)
Dayton to Muskegon distance (DAY to MKG)
Dayton to Kalamazoo distance (DAY to AZO)
Dayton to Peoria distance (DAY to PIA)
Dayton to Champaign distance (DAY to CMI)