Disney’s animated musical-comedy series Phineas and Ferb returned to television on June 5, 2025. For 4 seasons, originally airing from 2007 to 2015, the series captivated audiences of all ages and has stood the test of time. From summer adventures to secret agent showdowns, Phineas and Ferb delivered memorable moments in several of its timeless episodes.
Whether it’s the hilarious antics of Dr. Doofenshmirtz or the unforgettable musical numbers, some episodes never grow old. With a new season underway, new and longtime fans can relive the magic with a binge session of the best Phineas and Ferb episodes. Here’s a ranking of the most rewatchable and iconic episodes of Phineas and Ferb.
10. Phineas and Ferb Get Busted! — Season 1, Episode 16
In the episode, Candace (voiced by Ashley Tisdale) finally succeeds in her long-standing mission to bust her brothers. After Phineas (Vincent Martella) and Ferb (Thomas Brodie-Sangster) construct a flying car and a control tower in their backyard, their mother witnesses the spectacle. She sends them to a reform school designed to suppress imagination and creativity. At the reform school, the boys are subjected to mind control tactics aimed at turning them into obedient drones.
Realizing the severity of the situation, Candace, with assistance from Jeremy (Mitchel Musso), embarks on a rescue mission to rescue her brothers. The surreal plot twist at the end of the episode is that the entire sequence is revealed as a dream within a dream. The episode stands out as, in a subplot, Perry the Platypus’s (Dee Bradley Baker) real identity is revealed, forcing him to be relocated with Flynn and Fletcher’s memories erased.
9. It’s About Time! — Season 1, Episode 7
The episode originally aired on March 1, 2008. In the episode, Phineas and Ferb discover a broken time machine, while at the museum with their mother and sister. The duo decide to repair the machine and use it to time travel. Candace attempts to expose their activities to their mom but inadvertently gets caught in the time machine’s activation. Phineas, Ferb, and Candace are sent to the prehistoric era.
There, they encounter a Tyrannosaurus rex that destroys their time machine and leaves them stranded. The trio schemes up a way to get back to the present. In the episode’s subplot, Perry the Platypus feels dejected after he discovers that Dr. Doofenshmirtz has replaced him with a new nemesis, Peter the Panda. Eventually, Doofenshmirtz realizes he misses his old adversary, leading to a reconciliation between the two on a talk show.
8. The Chronicles of Meap — Season 2, Episode 7
The Phineas and Ferb episode is timeless for its playful parody of sci-fi tropes. It also introduced Meap, a character that became a fan favorite. The episode kicks off when Phineas and Ferb accidentally knock an alien spacecraft out of the sky while playing baseball. Inside the crashed craft is Meap (Lorenzo Lamas), an adorable alien who can only say “Meap.” The boys, along with Isabella and Candace, befriend Meap and learn he’s an intergalactic enforcer on a mission to capture the villainous Mitch (David Mitchell).
7. Meapless in Seattle — Season 3, Episode 21
Following closely is another Meap episode, where the alien returns to Earth to seek help from Phineas and Ferb. After being attacked by an alien robot controlled by Mitch, Phineas and Ferb create a “cute-tracker” to find the leaking “cuteness” that escaped to Earth. They arrive in Seattle and battle Mitch to save the planet and the universe at large.
6. Phineas and Ferb’s Quantum Boogaloo — Season 2, Episode 14
In the “Phineas and Ferb’s Quantum Boogaloo” episode, Phineas and Ferb travel 20 years into the future to obtain a tool that fuses metal and wood for their latest invention. There, they encounter their 35-year-old sister, Candace, who, upon discovering their activities, seizes the opportunity to finally “bust” them by returning to the past and revealing their project to their mother. However, this interference disrupts the timeline, leading to unintended consequences that threaten the future.
5. Phineas and Ferb: Summer Belongs to You! — Season 2, Episode 37/38
The episode remains timeless for its adventurous theme, musical numbers, and exploration of character relationships. In the episode, Phineas and Ferb, along with their friends, embark on an ambitious journey to travel around the world. Their idea is to create the “biggest, longest, fun-est summer day of all time, “and their adventure takes them to various destinations across the world.
4. Night of the Living Pharmacists — Season 4, Episode 29/30
“Night of the Living Pharmacists” is the first episode from season 4 on the list. The hour-long episode begins with Dr. Heinz Doofenshmirtz unveiling his latest invention, the “Repulsinator.” The device is created to make his brother, Mayor Roger Doofenshmirtz, so repulsive that no one would re-elect him. However, the device malfunctions, turning Roger into a zombie-like clone of Dr. Heinz Doofenshmirtz. This transformation is contagious, as anyone touched by these “mindless repulsive pharmacists” becomes one themselves. This leads to a city-wide outbreak in Danville.
3. Dude, We’re Getting the Band Back Together — Season 1, Episode 14
The episode centers around Phineas and Ferb’s efforts to reunite their parent’s favorite band, Love Händel, for their wedding anniversary. When Lawrence, Phineas and Ferb’s father, forgets his wedding anniversary, the boys decide to help him make it up to their mother, Linda. They organize a special surprise by reuniting the Love Händel band for a one-night-only concert. In the episode’s subplot, Perry the Platypus assists Dr. Doofenshmirtz in planning a surprise birthday party for his daughter, Vanessa (Olivia Olson).
2. Act Your Age — Season 4, Episode 29
“Act Your Age” is another season 4 episode that makes it into the top episodes of Phineas and Ferb. Originally aired on February 9, 2015, the episode delves into themes of growth, self-discovery, and the evolution of long-standing relationships. In the episode, set 10 years in the future, a teenage Phineas is faced with the decision of choosing between attending Danville University or Tri-State State College. Amidst this, Phineas finally discovers that Isabella has harbored feelings for him since childhood. This prompts introspection, with Phineas admitting his own feelings for Isabella.
1. Last Day of Summer — Season 4, Episode 30
For over a decade, “Last Day of Summer” has been the highest-rated episode of Phineas and Ferb. Set on the 104th and final day of summer vacation, the episode centers on Candace’s last chance to bust her brothers. When her initial attempt fails as usual, she encounters Dr. Doofenshmirtz and his “Do-Over-Inator,” a device designed to reset the day. However, she soon discovers that each reset brings unforeseen consequences, with only Candace being able to remember things. The episode forever remains timeless as it is a narrative and emotional culmination of the series. This Phineas and Ferb episode emphasized the bonds between the characters and the bittersweet nature of endings.
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