If you've been dreaming about aviation in Tamriel, it's time to take the first step!
Warning! Includes only the tower!
Everything else will find the links.
Modification is done for myself, stationed in front of the Moonstone Castle. See map screnshoot.

Variants of aircraft:
Balloon (physics Havok)
Dwemer Skyship fully flyable 
Airship - Dev Aveza 
Dwemer Flying Machine

installation:
In the data folder 2 files from the archive
removal:
Remove Airport_Of_Whiterun.esp, Airport_Of_Whiterun.bsa

Credits: 
Modders Resource Pack