There are
867 mi
from Bethlehem, PA to Swansea, IL
That's the driving distance. It would take 16 hours 39 mins to go from Bethlehem, Pennsylvania to Swansea, Illinois.
The flight distance (direct flight from Bethlehem, PA to Swansea, IL) is 790.81 mi.
867 mi = 1,395.76 kms