From Las Vegas to the California state line is only about 50 or 60 miles.
Approximately between 9 and a half and 10 hours on a plane
The driving distance between Amarillo, TX and Las Vegas, NV is approximately 860 miles. The driving time would be approximately 13 hours 30 minutes if you were to travel non-stop in good driving...
382.8 kilometres (237.86 miles)
Flight distance is 5525 miles or 8891 kilometers