There are
2,705 mi
from Irvine, CA to Lansdowne, PA
That's the driving distance. It would take 2 days to go from Irvine, California to Lansdowne, Pennsylvania.
The flight distance (direct flight from Irvine, CA to Lansdowne, PA) is 2,368.80 mi.
2,705 mi = 4,353.36 kms