NORAD reports that such sightings are seasonable and you can monitor this on-line at: http://www.noradsanta.org ...
However, it could be related to the following story.
WASHINGTON - Kris Kringle, d.b.a. Santa Claus, got the green light today from the U.S. Department of transportation (DOT) to engage in air travel to various points throughout the United States the night of Dec. 24-25.
An order granting a flight certificate and signed by U.S. Transportation Secretary Norman Y. Mineta said that Santa Claus has a 100 percent on-time arrival record.
In his application, Santa notes that his operating proposal will meet the air service requirements of countless small communities, and also will serve the major transportation hubs in all regions.
Finally, the applicant, aware of the department’s heightened security concerns, said that although he does not have a sky marshal aboard he has asked his lead reindeer, Rudolph, to stay especially alert.
The department said that no one has opposed the application, and Mr. Claus disclosed several million letters of support from children everywhere. In these circumstances, it appears that a grant of the applicant’s request is in the highest public interest,” the department said.