There are
1,533 mi
from Pasadena, TX to Lansdowne, PA
That's the driving distance. It would take 1 day 4 hours to go from Pasadena, Texas to Lansdowne, Pennsylvania.
The flight distance (direct flight from Pasadena, TX to Lansdowne, PA) is 1,329.55 mi.
1,533 mi = 1.61 kms