Essentially a form of Amdahl's Law. Even if planes travelled at the speed of light, it would still take ~2 hours (an hour and a half to check in and go through

Essentially a form of Amdahl's Law. Even if planes travelled at the speed of light, it would still take ~2 hours (an hour and a half to check in and go through security, 30 minutes to deboard and get get luggage). The maximum speedup possible is ((time spent in the airport) + ( time spend on the plane))/(time spent in the airport). That would be ~4x for a cross country flight, and ~7x for a LA to London.