Air Miles Calculator

Distance between Dayton, OH (DAY) and Chicago, IL (ORD)

Distance from Dayton International Airport to O'Hare International Airport is 240 miles / 387 kilometers / 209 nautical miles.

Calculations with different 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).

Flight duration

Estimated flight time from Dayton International Airport (DAY) to O'Hare International Airport (ORD) is 57 minutes.

Time difference and current local times

The time difference between Dayton and Chicago is 1 hour. Chicago is 1 hour behind Dayton.

Time Difference

Dayton
Chicago

Dayton, OH

 EST

Chicago, IL

 CST

Airport information


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

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

Map

Flight map from Dayton to Chicago.

Frequent Flyer Miles Calculator

Dayton (DAY) → Chicago (ORD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
240
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
240

Round trip?