There are
1,685 mi
from Tulsa, OK to Kalispell, MT
That's the driving distance. It would take 1 day 4 hours to go from Tulsa, Oklahoma to Kalispell, Montana.
The flight distance (direct flight from Tulsa, OK to Kalispell, MT) is 1,248.30 mi.
1,685 mi = 1.61 kms