Flight O'Hare International Airport departs from Chicago O'Hare International Airport at 08:00 and arrives at Miami International Airport at 23:29.The flight has a short stop at San Francisco.
The flighttime is about 14h 29m. The distance travelled ("as the bird flies"): 858 Km. So the average speed is roughly 59 Km.
There is an 1 hour time difference between Chicago and Miami