• Air date: 04 Mar '11 62 episodes
      The third season of Phineas and Ferb first aired on Disney Channel on March 4, 2011, and on Disney XD on March 5, 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, secret agent Perry the Platypus, the evil scientist Dr. Heinz Doofenshmirtz, and the brothers' older sister Candace Flynn. Recurring characters are across-the-street
  • List of Episodes (62)
    • 51. Sipping with the Enemy

      22 Jun '12
      Candace tries to bust Phineas and Ferb when they put on an enormous backyard magic show, while Vanessa and Major Monogram's son Monty get coffee together despite their warring fathers. Meanwhile, Dr. Doofenshmirtz tries to become hip in an attempt to get youthful followers.
    • 52. Tri-State Treasure: Boot of Secrets

      22 Jun '12
      The guys help their dad unearth a missing piece of Danville history; Doofenshmirtz tries to make himself younger to win a children's film festival.
    • 53. Doofapus

      06 Jul '12
      Candace accidentally turns into a fluid when she comes into contact with a device that turns solids into liquids. Meanwhile, Doofenshmirtz turns himself into a platypus to defeat Perry in battle.
    • 54. Norm Unleashed

      20 Jul '12
      Candace finds it difficult to bust Phineas and Ferb when her brothers build nanobots that can assemble into any object they can imagine. Meanwhile, Dr. Doofenshmirtz has jury duty, so Norm takes over the day’s evil scheme -- to destroy Danville by using weapons.
    • 55. Where's Perry (Part 1)

      26 Jul '12
      The Flynn-Fletchers are off on an African safari, leaving Perry at home to deal with Doofenshmirtz and his most evil plot yet: to take over the O.W.C.A. But when Doofenshmirtz accidentally zaps Carl the intern with his Ultimate-Evil-Inator ray, Carl takes over the O.W.C.A. (Organization Without a Cool Acronym) and imprisons Doof and Monogram. Agent P steps in but gets zapped with Doof’s many rays and in the cliffhanger of all cliffhangers, disappears.
    • 56. Where's Perry (Part 2)

      24 Aug '12
      Agent P's fate is finally revealed in the action-packed finale of the two-part television special that left Phineas, Ferb and the gang hanging...literally off an unchartered gorge and Candace frantic over a phone call with Jeremy that left their relationship status in limbo. Now, with Agent P nowhere in sight, Dr. Doofenshmirtz and Major Monogram square off against evil Carl who controls a set of familiar-looking robots to take over the OWCA, in one of the biggest battles yet.
    • 57. Ferb TV

      07 Sep '12
      Phineas and Ferb create their own TV shows and commercials.
    • 58. When Worlds Collide

      14 Sep '12
      After discovering that a strange planet is hurtling directly towards Danville, Phineas and Ferb set out to avert a disaster, while Buford looks forward to making contact with its alien race. Meanwhile, Dr. Doofenshmirtz hopes to steal the world's largest ball of twine.
    • 59. What'd I Miss?

      17 Sep '12
      Phineas and the gang introduce Ferb and Perry to their newest project - training domesticated squirrels to live in the wild. Meanwhile, Dr. Doofenshmirtz aims to do a better job of seeing through his evil plans now that Agent P is back.
    • 60. Road to Danville

      26 Oct '12
      When one of Dr. Doofenshmirtz's "-inators" zaps him and Agent P into the middle of nowhere, they must embark on a comical journey filled with twists and turns to return home.
    • 61. Your Backstory

      02 Nov '12
      Agent P quickly figures out there is more to Norm's odd reality show that celebrates the eventful life of his creator Dr. Doofenshmirtz, which is recreated through flashbacks and special guests.
    • 62. Blackout

      30 Nov '12
      Candace is put in charge of Phineas and Ferb just before they seize the opportunity to make the most of Danville's electricity blackout while Dr. Doofenshmirtz tries to use pity to his advantage.