Phineas and Ferb season 3

The third season of Phineas and Ferb first aired on Disney Channel on March 4, 2011, and on Disney XD on March 7, 2011. The season features two step-brothers on summer vacation trying to make every day the best day ever, while their sister tries to bust them. The five main characters are brothers Phineas Flynn and Ferb Fletcher, the boys' older sister Candace Flynn, secret agent Perry the Platypus (who's also the pet of Phineas and Ferb), and the evil scientist Dr. Heinz Doofenshmirtz. Midway through this season, the TV movie Across the Second Dimension had aired on August 5, 2011.

Recurring characters include across-the-street neighbor Isabella Garcia-Shapiro, the boys' mother and father Linda Flynn-Fletcher and Lawrence Fletcher, Major Monogram, Carl the Intern, Jeremy Johnson, Baljeet Tjinder, Buford Van Stomm, Stacy Hirano, and many more.

Production
The season was announced by Dan Povenmire and Jeff "Swampy" Marsh on June 9, 2009, and was confirmed two days later.

Ratings
All of the episodes have had positive reviews. The most viewed episode was "My Fair Goalie" with 4.7 million viewers, and the least watched episode was "Excaliferb" with 2.2 million viewers.