S4 E1: For Your Ice Only

S4 E2: Happy New Year!

S4 E3: Fly on the Wall

S4 E4: Bully Bust

S4 E5: My Sweet Ride

S4 E6: Der Kinderlumper

S4 E7: Sidetracked

S4 E8: Primal Perry

S4 E9: Mind Share

S4 E10: Backyard Hodge Podge

S4 E11: Bee Day

S4 E12: Bee Story

S4 E13: Great Balls of Water

S4 E14: Where's Pinky?

S4 E15: Phineas and Ferb's Musical Cliptastic Countdown Hosted by Kelly Osbourne

S4 E16: Knot My Problem

S4 E17: Just Desserts

S4 E18: La Candace-Cabra

S4 E19: Happy Birthday, Isabella

S4 E20: Love at First Byte

S4 E21: One Good Turn

S4 E22: Phineas and Ferb: Mission Marvel

S4 E23: Thanks But No Thanks

S4 E24: Troy Story

S4 E25: Druselsteinoween

S4 E26: Terrifying Tri-State Trilogy of Terror

S4 E27: Face Your Fear

S4 E28: Cheers for Fears

S4 E29: Steampunx

S4 E30: Just Our Luck

S4 E31: Return Policy

S4 E32: Live and Let Drive

S4 E33: Phineas and Ferb Save Summer

S4 E34: Father's Day

S4 E35: Imperfect Storm

S4 E36: The Return of the Rogue Rabbit

S4 E37: It's No Picnic

S4 E38: The Klimpaloon Ultimatum

S4 E39: Operation Crumb Cake

S4 E40: Mandace

S4 E41: Phineas and Ferb: Star Wars

S4 E42: Lost in Danville

S4 E43: The Inator Method

S4 E44: Night of the Living Pharmacists

S4 E45: Tales from the Resistance: Back to the 2nd Dimension

S4 E46: Doof 101

S4 E47: Act Your Age

S4 E48: Last Day of Summer