How many times faster does light travel compared to a fighter jet?

We know the speed of light, and if it stays in the same medium, it never changes.

We don't know the speed of the fighter jet, and besides that, it can change over a wide range.

Let's give the fighter jet the speed of 1200m/s- the fastest fighter jet.

Then what we're really talking about is the speed of light compared to the speed of sound.

That's (300000000m/s/ 1200m/s) = 250000 times as fast!