Flight Distance Calculator
Calculate Flight Distance
Formula
d = R x arccos(sin(phi1) x sin(phi2) + cos(phi1) x cos(phi2) x cos(delta_lambda)), where R = 6,371 km.
Frequently Asked Questions
How is the great circle distance calculated?
Using the spherical law of cosines: d = R x arccos(sin(lat1) x sin(lat2) + cos(lat1) x cos(lat2) x cos(lon2-lon1)), where R is Earth's radius (6,371 km).
Is this the actual flight distance?
This is the shortest distance between two points on the Earth's surface (great circle distance). Actual flight paths may be longer due to air traffic routes, weather, and restricted airspace.
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