The banner read: ''WE STILL DEM BOYZ! (hash)SACKSCOMIN!'' The Dallas Morning News reported Greg Hardy paid $300 to help fund the project.
Hardy is suspended for the first four games of the season for a domestic violence incident. The 26-year-old defensive end is new to the Cowboys-Eagles rivalry after playing his first five seasons for Carolina.
Fans at Lincoln Financial Field booed the plane.
AP NFL website: www.pro32.ap.org and http://twitter.com/AP-NFL