Flight O'Hare International Airport departs from Chicago O'Hare International Airport at 06:00 and arrives at San Diego International Airport at 12:42.The flight has a short stop at San Francisco.
The flighttime is about 8h 42m. The distance travelled ("as the bird flies"): 3253 Km. So the average speed is roughly 374 Km.
There is an 2 hour time difference between Chicago and San Diego