[buccaneer81]

Shows you what the economy is really like. 3000 planes on Christmas Day 2009, when at 9:00 AM on September 11, 2001 there were over 4500 in the sky.

[Mr. Silverback]

Fewer flights on Christmas Day, most people travel on Dec. 23 or 24.

[nwrep]

Shows you what the economy is really like. 3000 planes on Christmas Day 2009, when at 9:00 AM on September 11, 2001 there were over 4500 in the sky.

Apples and oranges. Do you have statistics comparing Christmas day flights in other years? It would seem that Christmas day would be a particularly SLOW day for air travel, as most people in the US are at home.