Aviation & Aeronautics
Basic

Flight Time

Time en route equals distance divided by ground speed.

Formula

t=dGSt = \dfrac{d}{GS}

Variables

tTime (h)
dDistance (nm)
GSGround speed (kt)

Example

300 nm at 150 kt GS: t = 2 h

Did You Know?

Flight planners compute time from ground speed, not airspeed — the wind makes all the difference.

timenavigationplanning