Wheee, I'm Flying!
This is a beautiful cinematic track, it's sweeping, it's orchestral, and most importantly, you're working from an incredibly effective but simple theme, which makes it easy to remember. (I'm still humming the main theme.)
This, I think, rivals Michael Giacchino in terms of awesomeness. You've captured the essence of flying over a country in an orchestral composition. Your use of the marimba (or is it a xylophone?) at the beginning of the piece is really effective, and I love the way you bring it back throughout the track.
Now, there's really only a couple of... well, they're not even complaints, they're just suggestions:
1. Perhaps more ethnic instrumentation? I know this is an orchestral competition but, if you revisit this piece, I'd love to hear what it would sound like if, at some point later in the piece, you switched the theme over to some bagpipes and/or duduk (or any other ethnic Middle Eastern instruments). That sort of instrumental development would really make you feel like you're flying around the whole world.
2. It ends too abruptly! Now this is a good and bad thing: I feel like the track is the perfect length, and it does what it needs to do. But, you have the violins holding a single note for the last few seconds -- it sounds like the piece wants to go on, but in a different direction. Think of "Star Wars" -- you have the main overture, then the music settles down and tenses up as the Star Destroyer comes into view, chasing Leia's ship. That's sort of what I envision here -- you have this flying main theme, then the track sounds like it wants to continue on to score the scene after the title credits.