Canaan

As I said earlier  and somewhere else perhaps, I admire those able to plop a realistic airport. Therefore : Admiration !

(BTW, Is that Jenx Airport ?)

I looks pretty good for the most part. The two big things I would complain about though would be that the runways are quite a bit too short very large aircraft like 747s (they need runways that are around 10,000 to 11,000 feet long (about 4/5 the length of a large city tile)), and that the airplanes in the center area do not really have enough space to be reversed out of their gates.

Other than that it looks pretty nice.

The terminals look pretty good, but as others have said, I think the runways are too short. Also not to be nitpickey, but the taxiways by the terminals do not have the correct markings and are a little too small for my liking. Otherwise, it's a good start. 

Central Terminal for the big jet´s might be a little bit tight; reversing access directly to the taxiway´s would be more natural. Terminal main structure seem a bit on the tight size to handle such amount of traffic, obviously a lot will be concealed underground; main check in-out desk´s and  shops without daylight ?

Nice setting for an airport. Good work.