There are
2,443 mi
from Downey, CA to Fernandina Beach, FL
That's the driving distance. It would take 1 day 18 hours to go from Downey, California to Fernandina Beach, Florida.
The flight distance (direct flight from Downey, CA to Fernandina Beach, FL) is 2,142.08 mi.
2,443 mi = 3.22 kms