There are
643 mi
from Tulsa, OK to Dubuque, IA
That's the driving distance. It would take 12 hours 1 min to go from Tulsa, Oklahoma to Dubuque, Iowa.
The flight distance (direct flight from Tulsa, OK to Dubuque, IA) is 522.60 mi.
643 mi = 1,034.55 kms