Check out the visual documation for this project by Aaron Koblin using FAA data for flight patterns over the United States. The east coast is unsurprisingly the densest related directly to the population centers. Florida air traffic seems amazingly dense owing I guess to the flight corridors for originations (ATL, CIN, CHI) to Florida destinations cities aligning with the peninsula. It's fascinating to watch the air network "wake up" and progress through the day. Watch this and then think back to 9/11 and the days following when all this activity was completely stopped.

Technorati: Air+Travel