Pretty decent, but small for an airport. However, the size isn't a big problem.
Open areas inside could use detailing/structural renovation; pretty bland. Exterior walling could also use the same. Interior
design, however, is fine.
Roofs outside should extend out farther from the edges of the building, current roof design doesn't make too much sense.
Color choice and roof design suggest a classic feel; however it clashes with the aircraft. If planes were private monoplanes (corsair, etc) it would fit better.
Entrance parking area and mini park is rather nice, as well as the drop off loop. Could use some more benches though.
8/10, only problems are mainly just some details and the clashing of modern and classic.
and
I lol'd because it has everything that an actual airport has, nothing taken out. That is awesome.
qft