Great-Circle Flight Distance & Time Calculator
Enter the latitude and longitude of two locations to calculate the shortest (great-circle) distance between them and get an estimated flight time based on typical cruising speed.
Great-Circle Distance
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Distance (miles)—
Flight Time Hours—
Flight Time Minutes—
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About this calculator
Calculate the great-circle distance between two cities using the haversine formula, plus an estimated flight time based on average cruising speed.
Frequently Asked Questions
What is the haversine formula?
The haversine formula calculates the shortest distance between two points on a sphere given their latitude and longitude, accounting for the Earth's curvature.
How accurate is the flight time estimate?
It's a rough estimate based on cruising speed only and doesn't account for takeoff, landing, taxiing, wind, or flight routing, which can add significant time.
Where can I find coordinates for a city?
You can search 'latitude longitude' plus the city name on any mapping service to find its coordinates.