I've yet to meet a post by Yosher that actually is nice :P
I see that you put a lot of effort in it and I think it looks good [...]
From what I'm seeing you could've used less bricks for this. But it's still really good.
On-topic:
This actually doesn't look to bad. Well, the runway/tarmac doesn't, at least.
I just hope you built the white bits into the tarmac, and not on top of it. The latter would look very unrealistic and quite ugly to the detail-perceiving eye.
The terminal is hideous. Even though it's not done yet, its design is just awful.
For one, you should add some shape and some sort of framework to build with instead of just a plain, grey shell.
I'm not sure what builders would call this(programmers call it hardcoding), but it looks like it could be
very difficult to add-on to (and look nice). May be too early to judge, but there's my input.
I do like certain bits of the controlo room.