The colour is highly saturated in this. I like the blue tones, but the skin tones are a bit too green. Playing with the curves for each colour, or the channel mixer, or some other method that alters the colour balance for red, green and blue separately could have helped (in case you don't know). I really like the angle you got. It's nice that some people try to be a bit different :P
I think it's weird that that old lady has red sneakers. I have red sneakers. And I'm not old. I think maybe you could have focused more on 'busy airport' or 'lonely airport'. this seems to be in the middle with the guy off to the left. also, you don't seem to be using the pattern of the chairs to enhance your composition which I know from experience in airports must be there.
Sorry, but I got so many problems with this shot. Techically, it's O.K., except for the washed out newspaper in the ladies' hands, but this looks like an accident more than anything else. (What's that shot? Your finger, oops....) Photo 6 Creativity 4 People 4 total 5 (sorry, but in the mood I'm in, that's the best I can do.)
I like the way this picture conveys killing time. However, I might've used a larger aperture to focus more on the people and keep the background (doors, etc) out of focus.