Miles between Billings, MT and Oak Forest, IL

There are
1,239 mi
from Billings, MT to Oak Forest, IL

That's the driving distance. It would take 21 hours 46 mins to go from Billings, Montana to Oak Forest, Illinois.

The flight distance (direct flight from Billings, MT to Oak Forest, IL) is 1,073.01 mi.

1,239 mi = 1.61 kms