American Airlines Flight 780 left Philadelphia International Airport at 7:42 p.m. local time on Monday and was supposed to land in Naples, Italy, at 10 a.m. local time, according to FlightAware.

A Naples-bound American Airlines flight was forced to reroute some 140 miles away because it was too big for the runway -- forcing passengers to take a three-hour bus ride to their final destination.

American Airlines Flight 1665 -- an Airbus A321 -- was heading to Charlotte Douglas International Airport in North Carolina, the FAA said. Passengers deplaned normally in Las Vegas, American said.