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The Worst Episodes of Phineas and Ferb

Every episode of Phineas and Ferb ranked from worst to best. Explore the Worst Episodes of Phineas and Ferb!

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Each day, two kindhearted suburban stepbrothers on summer vacation embark on some grand new project, which annoys their controlling sister, Candace, who tries to bust them. Meanwhile, their pet platypus plots against evil Dr. Doofenshmirtz.

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Episode Rankings

  1. #1 Worst Episode
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    Phineas and Ferb Season 5 Episode 28 - Space Adventure
    5.7/10(3 votes)

    #1 - Space Adventure

    S5:E28

    While Buford is sick, Baljeet makes him watch an episode of his favorite show, "Space Adventure!"

    Director:Bob Bowen
    Writer:Bob Bowen

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  2. Phineas and Ferb Season 3 Episode 48 - What A Croc!
    6.0/10(1 votes)

    #2 - What A Croc!

    S3:E48

    When the boys learn that the famous Crikey the Crocodile has gone missing, they set out to find and return him to his home at the Danville Nature Preserve. Meanwhile, to Candace's amazement, Irving reveals his digital scrapbook compilation of all of Phineas and Ferb's wild creations, and guest star Ray Liotta fills in for Major Monogram to give Perry his mission. Also, Dr. Doofenshmirtz plans to embarrass his brother by using his 'Chicken-Replace-inator' to replace Roger's mayoral award with the nearest chicken.

    Director:Robert Hughes
    Writers:Antoine Guilbaud, Aliki Theofilopoulos

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  3. Phineas and Ferb Season 2 Episode 66 - Candace Gets Busted
    6.5/10(2 votes)

    #3 - Candace Gets Busted

    S2:E66

    When Linda and Lawrence go on a trip, Candace decides to have an Intimate Get Together with Stacy and Jenny. But, then more people come and makes it into a party. Later, when her parents get home, Candace gets busted.

    Director:Zac Moncrief
    Writers:Kim Roberson, Kaz

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  4. Phineas and Ferb Season 3 Episode 43 - Buford Confidential
    6.5/10(2 votes)

    #4 - Buford Confidential

    S3:E43

    Brigitte, Josette, and Colette, the visiting Fireside Girls from France, help Isabella capture the American Grizzly Bear, one of the world's most dangerous creatures. Buford's plan to jokingly dress up as the bear backfires when he discovers the identity of Brigitte, throwing him off his game. Back at their grandparents' cabin, Phineas and Ferb create the most amazing "run-through-the-sprinkler" experience. Meanwhile, Dr. Doofenshmirtz's loathing of pretzels drives him to create the "De-Twist-Inator" to untwist every pretzel in Danville.

    Director:Jay Lender
    Writers:Kaz, Antoine Guilbaud

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  5. Phineas and Ferb Season 3 Episode 57 - Ferb TV
    6.5/10(2 votes)

    #5 - Ferb TV

    S3:E57

    Phineas and Ferb create their own TV shows and commercials.

    Director:Robert Hughes
    Writers:Chong Lee, Mike Milo

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  6. Phineas and Ferb Season 4 Episode 37 - It's No Picnic
    6.5/10(2 votes)

    #6 - It's No Picnic

    S4:E37

    Buford and Baljeet get in a food fight while Ferb is at the dentist. The Fireside Girls help Isabella plan a romantic picnic with Phineas. Meanwhile, Vanessa wants to go to a movie marathon, so Doofenshmirtz creates a Teleport-inator.

    Director:Sue Perrotto
    Writers:Joe Orrantia, Eddie Pittman

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  7. Phineas and Ferb Season 4 Episode 38 - The Klimpaloon Ultimatum
    6.5/10(2 votes)

    #7 - The Klimpaloon Ultimatum

    S4:E38

    Phineas and the gang help Love Händel prove the existence of Klimpaloon, the magical old-timey bathing suit that lives in the Himalayas, to verify that their song, "The Ballad of Klimpaloon", is legitimate.

    Director:Sue Perrotto
    Writers:Mike Diederich, Zac Moncrief, Edward Rivera, Patrick O'Connor

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  8. Phineas and Ferb Season 5 Episode 29 - Droogenfest
    6.5/10(2 votes)

    #8 - Droogenfest

    S5:E29

    Isabella works with Doof to bake a giant pastry to impress foreign emissaries.

    Director:James Kim
    Writer:Sunny Karnan

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  9. Phineas and Ferb Season 5 Episode 30 - Doofercise
    6.5/10(2 votes)

    #9 - Doofercise

    S5:E30

    Doof gathers energy from people exercising while the kids pilot a boat that surfs concrete.

    Director:Amber Tornquist Hollinger
    Writer:Kim Roberson

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  10. Phineas and Ferb Season 4 Episode 8 - Primal Perry
    6.7/10(308 votes)

    #10 - Primal Perry

    S4:E8

    Perry comes face to face with an Australian platypus hunter set on destroying him. Baljeet is having an existential emergency and finds himself incapable of making decisions.

    Director:Robert Hughes
    Writers:Kyle Menke, Joshua Pruett

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  11. Phineas and Ferb Season 4 Episode 47 - Act Your Age
    6.8/10(4 votes)

    #11 - Act Your Age

    S4:E47

    It's been 10 years after the events of the present, and Phineas must decide what university to go to. After discovering that Isabella had a crush on him for years, Phineas must reach her before she leaves for college and express his true feelings for her. Meanwhile, Doofenshmirtz has a mid-life crisis.

    Director:Robert Hughes
    Writers:Kim Roberson, Bernie Petterson

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  12. Phineas and Ferb Season 5 Episode 15 - The Haberdasher
    6.8/10(164 votes)

    #12 - The Haberdasher

    S5:E15

    After Doof turns into a Mothman and eats Perry's hat, they pay a visit to the OWCA Haberdasher.

    Director:James Kim
    Writer:Joshua Pruett

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  13. Phineas and Ferb Season 1 Episode 27 - Crack That Whip
    7.0/10(2 votes)

    #13 - Crack That Whip

    S1:E27

    Phineas and Ferb set up a roller derby rink for Grandma Betty Jo.

    Director:Dan Povenmire
    Writers:Kim Roberson, Timothy Bjorklund

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  14. Phineas and Ferb Season 1 Episode 33 - Bowl-R-Rama Drama
    7.0/10(2 votes)

    #14 - Bowl-R-Rama Drama

    S1:E33

    Phineas and Ferb build the world's largest bowling ball and pins. Meanwhile, Doofenshmirtz wants to use his latest invention to freeze the Tri-State Area so the people will buy his hot chocolate.

    Director:Dan Povenmire
    Writers:Chris Headrick, Alex Almaguer

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  15. Phineas and Ferb Season 1 Episode 35 - Comet Kermilian
    7.0/10(2 votes)

    #15 - Comet Kermilian

    S1:E35

    The boys build a telescope, while Doofenshmirtz tries to liquify steak. Meanwhile, Candace has another encounter with Jeremy's younger sister, Suzy.

    Director:Dan Povenmire
    Writers:Chris Headrick, Alex Almaguer

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  16. Phineas and Ferb Season 1 Episode 37 - Does This Duckbill Make Me Look Fat?
    7.0/10(2 votes)

    #16 - Does This Duckbill Make Me Look Fat?

    S1:E37

    Phineas and Ferb create a teleporting machine, but it ends up switching Candace and Perry's brains.

    Director:Dan Povenmire
    Writers:Piero Piluso, Douglas McCarthy

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  17. Phineas and Ferb Season 1 Episode 38 - The Flying Fishmonger
    7.0/10(2 votes)

    #17 - The Flying Fishmonger

    S1:E38

    The boys are helping Ferb's grandfather live his life long dream - to jump a gorge in his motorcycle, the Holy Mackerel. Meanwhile, Perry sets out to stop Dr. Doofenshmirtz from exacting another petty revenge that dates all the way back to the sandbox.

    Director:Zac Moncrief
    Writers:Bobby Gaylor, Martin Olson

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  18. Phineas and Ferb Season 1 Episode 39 - One Good Scare Ought to Do It!
    7.0/10(2 votes)

    #18 - One Good Scare Ought to Do It!

    S1:E39

    When Isabella falls prey to hiccups, Phineas and Ferb gather the kids together to help scare them out of her, using a remote controlled haunted house. Meanwhile, Doofenshmirtz sets out to destroy his mentor's hideout, so that no one could discover his secrets, but not if Perry has something to say about it!

    Directors:Dan Povenmire, Zac Moncrief
    Writers:Bobby Gaylor, Martin Olson

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  19. Phineas and Ferb Season 1 Episode 41 - Oil on Candace
    7.0/10(2 votes)

    #19 - Oil on Candace

    S1:E41

    When Django feels down for not being able to draw art on the same scale as his father, Phineas and Ferb get some big ideas for his piece and the famous "unpainted desert". Meanwhile, Perry faces off against Doofenshmirtz, as he does his best to impress his visiting evil professor.

    Director:Zac Moncrief
    Writers:Antoine Guilbaud, Aliki Theofilopoulos

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  20. Phineas and Ferb Season 1 Episode 43 - Hail Doofania!
    7.0/10(2 votes)

    #20 - Hail Doofania!

    S1:E43

    When Doofenshmirtz's brother Roger is elected mayor, he decides to build his own country, where he can rule over everything, but how will he stop him when Perry is having trouble entering his hideout? Meanwhile, Phineas and Ferb, in an attempt to help Isabella see her "first" rainbow, create the Rainbow-enator, which harnesses the power of their breakfast cereal to make the light show. The strangest anomaly of the episode, however, is when Candace and Vanessa manage to get their clothes mixed up at the dry-cleaners, resulting in a backwards day for everyone.

    Director:Zac Moncrief
    Writers:Antoine Guilbaud, Aliki Theofilopoulos

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  21. Phineas and Ferb Season 1 Episode 46 - Unfair Science Fair
    7.0/10(2 votes)

    #21 - Unfair Science Fair

    S1:E46

    Phineas and Ferb help Baljeet build a portal to Mars for a special Summer science fair. Candace competes against another girl for getting a job at Mr. Slushy Burger. Meanwhile, Doofenshmitz builds a bicarbonate volcano for the science fair, in yet another attempt to redeem himself from his embarrassing childhood, where we discover where the -inator suffix originated from.

    Directors:Dan Povenmire, Zac Moncrief
    Writers:Aliki Theofilopoulos, Elizabeth Ito

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  22. Phineas and Ferb Season 1 Episode 47 - Unfair Science Fair Redux (Another Story)
    7.0/10(2 votes)

    #22 - Unfair Science Fair Redux (Another Story)

    S1:E47

    When Candace believes that no one wants to be around her anymore, she quickly steps through Baljeet's portal to Mars, where she is quickly heralded among the martians. Meanwhile, Perry accompanies Dr. Doofenshmirtz to help build his evil contraption for him to stop faster, with slightly less than pleasing results.

    Directors:Dan Povenmire, Zac Moncrief
    Writers:Jon Colton Barry, Piero Piluso

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  23. Phineas and Ferb Season 2 Episode 40 - I Was a Middle Aged Robot
    7.0/10(2 votes)

    #23 - I Was a Middle Aged Robot

    S2:E40

    Lawrence's memory is accidentally erased by a gadget in Perry's lair before participating in a father-daughter race with Candace, so Perry operates a robot version of Lawrence to fill in for him. Meanwhile, Dr. Doofenshmirtz invents an opposite of glue named "Eulg," which breaks stuff apart rather than join it together.

    Director:Zac Moncrief
    Writers:Chong Lee, Sherm Cohen

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  24. Phineas and Ferb Season 2 Episode 44 - Invasion of the Ferb Snatchers
    7.0/10(2 votes)

    #24 - Invasion of the Ferb Snatchers

    S2:E44

    After watching a sci-fi movie marathon, Candace becomes convinced that Ferb is an alien. Meanwhile, Dr. Doofenshmirtz tries to market an evil invention by claiming it to be a cleaning device.

    Director:Zac Moncrief
    Writers:Perry Zombolas, Joe Orrantia

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  25. Phineas and Ferb Season 2 Episode 53 - Phineas and Ferb Hawaiian Vacation (1)
    7.0/10(2 votes)

    #25 - Phineas and Ferb Hawaiian Vacation (1)

    S2:E53

    The Flynn-Fletcher Family go on a vacation to Hawaii. While they are there, Phineas and Ferb make living sea creatures and Candace find a lava necklace of bad luck. Meanwhile, Doofenshmirtz creates a De-Evolution-inator and Perry and him get stranded on a island.

    Director:Zac Moncrief
    Writers:Kim Roberson, Kaz

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Worst Episodes Summary

"Space Adventure" is the worst rated episode of "Phineas and Ferb". It scored 5.7/10 based on 3 votes. Directed by Bob Bowen and written by Bob Bowen, it aired on 10/25/2025. This episode scored 0.3 points lower than the second lowest rated, "What A Croc!".