Flight Duration Calculator
Estimate how long a flight will take from the distance between two airports and the aircraft cruise speed. Enter the great circle distance in miles or kilometers and a typical cruise speed, and this tool returns the pure air time, then adds a realistic buffer for taxi, takeoff climb, and descent so the number is closer to the gate-to-gate time airlines quote. A jet cruises around 500 to 560 miles per hour, while a turboprop is much slower, so you can plug in a speed that matches the route. This is handy for planning connections, guessing arrival times across schedules, or sanity checking a booking. It ignores wind and routing detours, so treat it as an estimate. All math runs in your browser and nothing is sent to a server.
How to use Flight Duration Calculator
- Enter the great circle distance or the two airports.
- Enter or accept a typical cruise speed.
- Read the estimated air time.
- Add the taxi and climb buffer for a realistic gate time.
Frequently asked questions
How does it estimate flight air time?
It divides the great circle distance between airports by a typical cruise speed to get the air time aloft.
Why add a taxi and climb buffer?
Real gate-to-gate time includes taxi, takeoff, climb and descent, so a buffer on top of cruise time gives a more realistic scheduled duration.
How accurate is the estimate?
Winds, routing and air traffic shift real times, so the figure is a planning estimate rather than an exact airline schedule.
What is Flight Duration Calculator?
Estimate how long a flight will take from the distance between two airports and the aircraft cruise speed. Enter the great circle distance in miles or kilometers and a typical cruise speed, and this tool returns the pure air time, then adds a realistic buffer for taxi, takeoff climb, and descent so the number is closer to the gate-to-gate time airlines quote.
Is Flight Duration Calculator free to use?
Yes. Flight Duration Calculator is completely free, with no sign-up and no usage limits.
Does Flight Duration Calculator work in a web browser?
Yes. Flight Duration Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Flight Duration Calculator?
Yes. Flight Duration Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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