There are
1,245 mi
from San Clemente, CA to Altus, OK
That's the driving distance. It would take 21 hours 45 mins to go from San Clemente, California to Altus, Oklahoma.
The flight distance (direct flight from San Clemente, CA to Altus, OK) is 1,048.48 mi.
1,245 mi = 2,003.93 kms