That's $13 less than select routes on comparable carriers. Buy Now at ShermansTravelSearch Tips On the ShermansTravel landing page, click "click here" in the top paragraph to see this sale. We found this price on flights departing from Atlanta, GA (ATL) with arrival in Philadelphia, PA (PHL) on January 8. Book this travel deal today for flights from December 20 through February 12. All prices, dates, and booking details were valid at the time of publication.