There are
2,700 mi
from Salt Lake City, UT to Key West, FL
That's the driving distance. It would take 2 days 1 hour to go from Salt Lake City, Utah to Key West, Florida.
The flight distance (direct flight from Salt Lake City, UT to Key West, FL) is 2,062.56 mi.
2,700 mi = 4,344.43 kms