Travelers should act fast to book cheap holiday airfare.

FOX News Radio's Bill Vitka reports:

If you haven't done it already this is the best time to book holiday air travel.

If you want to navigate Thanksgiving, the best day to buy a ticket at the lowest price, according to Orbitz, is today . 

In fact, this is the best week to book Christmas and New Years. Friday, October 9th -- for Christmas. Saturday, October 10th for New Years.

Orbitz says that its recommendations are based on past holidays. And it says people already are in line to find cheaper flights.

Airfare, this season, is 9% lower than one year ago. But beware the only place for airfare is to go is up.

Bill Vitka, FOX News Radio.