Ubisoft has announced that you won’t be able to “fly” in Watch Dogs but you will still be able to explore Chicago.
Watch Dogs’ senior producer Dominic Guay said the following to the Examiner:
Players will not fly aircrafts in Watch Dogs. We did not feel it was core to the experience we wanted to create.
He did note though that there are lots of other vehicles you can pilot in the game. This includes a number of cars, trucks, motorcycles and boats too. You will be able to explore the rivers, lakes and outer limits of Chicago.
Watch Dogs will be out this November for the PC, PS3, PS3, Xbox 360 and Xbox One.