Nice picture. The blue ceiling and muted pallette gives this one a calming feeling. And I feel it does fit the challenge, maybe an article about airports around the world. The only thing I feel that could be improved is the composition. It's hard to tell exactly what the center of interest should be.
Are you having problems resizing your pictures? If you post a question in the forums, no matter what program you use, someone will help you out with information on how to do it properly. The only reason I say this is because it looks like you took this with a camera that is capable of producing much larger pictures without degrading the quality. I will try to come back later and delete this part so it doesn't show after the contest is over.