Corrected entry: In the scene when Kevin bumps into the flight ticket attendant, he loses his ticket in the pile that falls to the ground. But in a later scene, when Harry catches him jumping off the hotel dock, they pull that same plane ticket out of his jacket pocket.
Corrected entry: When Harry and Marv finally catch Kevin after he escapes from The Plaza, Marv looks at Kevin's boarding pass and says 'Round trip to Miami' before tearing it up. However, Kevin didn't have his boarding pass at this stage. While he ended up at the wrong gate due to a man wearing a trench coat similar to his dad's, he lost the actual boarding pass while crashing into the woman at the gate, allowing him to get on the wrong plane in the first place.
Corrected entry: When Kevin records the commercial for the Plaza Hotel, the phone number is cut off by his father's voice. When Kevin is in the hotel later on, he plays the tape and his father's voice is not on it at all and he is able to hear the phone number perfectly.
Corrected entry: When Kevin rolls out his "Operation Ho Ho Ho" plan, similar to the "Battle Plan" from the first film, the printing on it looks to be done by a very young child, with backwards letters, even. But later, when they show the note he wrote to Mr Duncan (the one he wrapped around the brick he threw through the window) the handwriting is much neater - and even a little feminine.
Corrected entry: Kevin has his dad's bag, whose name is Peter, and while standing in front of the toy store when Harry and Marv spot him, the bag has "K. Mcallister" stitched on it. It should be a "P" since it is his dad's bag.
Corrected entry: When Harry and Marv get hit by the toolchest, Harry asks, "What's that sound?" Marv answers, "That was the sound of a tool chest falling down the stairs." They had not been on the staircase it came from, and had not seen the tool chest or the stairs - both were blocked by the door.
Corrected entry: Just before Kevin's plane to NYC takes off, he puts on a pair of headphones and listens to some music. In reality, passengers are not allowed to use any electronic equipment (laptops, cell phones, headphones, CD players, etc.) in order to ensure no interference in communications between the plane and air traffic control during takeoff and landing.
Corrected entry: When the McCallister kids are all asleep at the Plaza, the shot shows Fuller in the big bed and a few seconds before he wakes up, you hear somebody from behind the camera whisper, 'Wake up.' You have to be close to your TV to hear it and it couldn't have been any of the other McCallister kids saying it because everybody else was sound sleep.
Corrected entry: When the McCallisters are in the airport van, Kate gives Megan her ticket and then Megan and Linnie compare their tickets and Megan asks Kate, 'How come none of us are sitting together?' How would she know if she only compared her ticket with one other person?
Corrected entry: When Harry sticks his flaming head in the toilet, there is an explosion and the scene shows the exterior of the house with the front doors closed. The doors should be open seeing as Marv previously kicked them open before he fell in the hole.
Corrected entry: When Kevin is going up the garbage tunnel for the first time, you see an exterior view of the tunnel wobbling. Off to the left of the screen, you can see a string attached to the curve of the tunnel, which is causing it to wobble.
Corrected entry: The reason the family almost miss the flight is because the alarm clock is re-set when the father is un-plugging it to get his camcorder charger. When the clock is disconnected it makes a fairly loud beeping sound. Now, with the parents sleeping just inches from the clock, don't you think they would hear this beeping? They can't be heavy sleepers because the sound of the door-bell is enough to wake them, especially in such a big house.
Corrected entry: The toys Kevin buys in Duncan's Toy Chest comes to $23.75 cents. Kevin pays only in notes and the cashier, Mr. Duncan, gives him his change, also consisting of only notes, surely some of the change should have been coins?
Corrected entry: In the swiming pool scene, when Kevin is asking permision from the old people in the pool to jump in, the lady on the chair behind him is there then not there and then there again.
Corrected entry: At the start of the film, Kevin tapes his Uncle Frank singing in the shower, but he doesn't tape all of the singing. When Kevin is in the hotel in New York, he plays back the tape when the blow up clown is in the shower, all of the singing is on the tape, including something his uncle said when Kevin ran away from him.