There are
2,695 mi
from Downey, CA to Bethlehem, PA
That's the driving distance. It would take 2 days to go from Downey, California to Bethlehem, Pennsylvania.
The flight distance (direct flight from Downey, CA to Bethlehem, PA) is 2,371.87 mi.
2,695 mi = 4,336.41 kms