I agree Ladislaus, he completely missed the point and was utterly confused. These are the kind of problems, confusions, bad thinking, illogic, etc. that most Globers hold within them. It's not their fault though, it's what they were taught. They weren't taught to think for themselves at any point in their public school education.
If the flight path looked like the RED paths on this graphic (shown in both projections), it would be a piece of evidence for Globe Earth.
But if the earth is in fact flat, there is no "shortcut" across the globe. The shortest path between two places is a STRAIGHT LINE especially as the bird (or airplane) flies.
The path taken by an airplane is going to be the shortest path, get it? If you start out by heading north to reach a destination that's *supposed to be* in the East, according to the Globe model, that's a huge red flag.
TL;DR: Flat Earth confirmed.