Air Miles Calculator

Distance between Chicago, IL (ORD) and Alpena, MI (APN)

Distance from Chicago to Alpena (Alpena County Regional Airport – O'Hare International Airport) is 306 miles / 492 kilometers / 266 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 305.542 miles
  • 491.722 kilometers
  • 265.509 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
  • 305.246 miles
  • 491.245 kilometers
  • 265.251 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 O'Hare International Airport (ORD) to Alpena County Regional Airport (APN) is 1 hour 4 minutes.

Time difference and current local times

The time difference between Chicago and Alpena is 1 hour. Alpena is 1 hour ahead of Chicago.

Time Difference

Chicago
Alpena

Chicago, IL

 CDT

Alpena, MI

 EDT

Airport information


A 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

B Alpena County Regional Airport
City: Alpena, MI
Country: United States Flag of United States
IATA Code: APN
ICAO Code: KAPN
Coordinates: 45°4′41″N, 83°33′37″W

Map

Chicago to Alpena flight map.

Frequent Flyer Miles Calculator

Chicago (ORD) → Alpena (APN).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
306
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
306

Round trip?