How to Estimate Flight Time from Distance
Flight time = distance / cruising speed. At about 850 km/h, Narita to Honolulu (about 6300 km) takes 6300 / 850 = about 7.4 hours (excluding taxi, climb, and descent).
Open the interactive Everyday Lifestyle tool →Formula: time = distance / speed
Key facts
| Formula | time = distance / speed |
|---|---|
| Cruising speed | 850 km/h |
| 6300 km route | ~7.4 h |
| Jet cruise | ~Mach 0.85 |
Frequently asked questions
How long is a 6300 km flight?
About 7.4 hours at 850 km/h cruising speed, before taxi, climb, and descent time.
Why is actual time longer?
Taxiing, climb, descent, holding, and headwinds add to the pure cruise estimate.
How fast do jets cruise?
About 850-900 km/h, roughly Mach 0.85 at cruising altitude.
Related pages
Flight Time Estimator is part of Everyday Lifestyle on GOAT Lab — a free reference you can use without signing up, and it works offline. Open the tool above for any custom value.
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