Aircraft fly over most parts of the world, but some countries are off limits - including Tibet. Here's why pilots avoid ...

If you're a nervous flier, you may want to avoid this notoriously bumpy flight route. Here's why "mountain waves" make the ...

If you see large military planes flying low over Angeles National Forest and dropping water north of Los Angeles this week, ...

Crossing the country by plane is generally pretty smooth, but a few states throw some real curveballs into the sky. Factors like tricky weather, packed skies, and pilot experience all make some ...