Map of flight path from Philadelphia to Derry.
Shortest flight path between Philadelphia International Airport (PHL) and City of Derry Airport (LDY).
How far is Derry from Philadelphia?
There are several ways to calculate distances between Philadelphia and Derry. Here are two common methods:Vincenty's formula (applied above)
- 3214.493 miles
- 5173.225 kilometers
- 2793.318 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
- 3206.202 miles
- 5159.882 kilometers
- 2786.113 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 Philadelphia and Derry is 4 hours. Derry is 4 hours ahead of Philadelphia.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 360 kg (794 pounds).
Frequent Flyer Miles Calculator
Philadelphia (PHL) → Derry (LDY).