Map of flight path and driving directions from Houston to Alpena.
Shortest flight path between Houston William P. Hobby Airport (HOU) and Alpena County Regional Airport (APN).
How far is Alpena from Houston?
There are several ways to calculate distances between Houston and Alpena. Here are two common methods:Vincenty's formula (applied above)
- 1241.508 miles
- 1998.014 kilometers
- 1078.841 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
- 1242.457 miles
- 1999.540 kilometers
- 1079.665 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 Houston and Alpena is 1 hour. Alpena is 1 hour ahead of Houston.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 163 kg (359 pounds).
Frequent Flyer Miles Calculator
Houston (HOU) → Alpena (APN).