Calculated distances for long-distance non-stop flights correlate much better with times calculate using the globe than the flat earth model (specifically the azimuthal projection model which seems to be the only specific one they use). I got the list of flights from this site: https://onemileatatime.com/guides/longest-flights-in-the-world/, the times from google flights (2 flights I couldn't find times for so excluded), and the airport co-ordinates from google as well.
“https://reddit.com/r/FlatEarthIsReal/comments/1do9e47/flight_distances_and_times/”>View Reddit by GreenBee531 – View Source
