Corrected entry: When the first shot of the rigged rope is shown outside of the upstairs window, the rope appears to be horizontal. Yet, when Kevin rides down it, the rope appears to now be sloping downward towards the treehouse.
Corrected entry: When Kevin goes to the market, he had one pack of toilet paper in his cart and as he heads through checkout. In the next scene, it shows him walking home with two bags. You can see that there are two packs of toilet paper (one in each bag).
Corrected entry: The family checks in to a United Ticket Counter, yet they fly an American Airlines plane.
Corrected entry: In the scene at the end when Kevin runs down the stairs to meet his mom, his hair totally changes in the next shot.
Corrected entry: When Kevin pushed Buzz and spills the milk, everyone rushed over to clean it up. Fuller runs over and gets stuck between the chair and the wall. Kevin's aunt runs over to Fuller, and she's maybe five feet away when the scene switches. It shows everyone cleaning up the mess. That lasts for about ten seconds then the scene switches back to Kevin's aunt and Fuller. She just got to him and takes him out from behind the chair. What was she doing for the past ten seconds?
Corrected entry: When Kevin is running through the next-door neighbour's basement, there is a lot of water pouring down from the upper levels of the house into the basement (the burglar's had turned the taps on earlier on in the movie). Yet, when Kevin reaches the kitchen, the taps are turned off - where is the water supposed to be coming from?
Corrected entry: In the scene where Harry and Marv are in Kevin's neighbour's house, when Kevin's dad calls, Harry picks up the phone to listen to the message, and the phone is on the hook. It shows him listening, then he calls out to Marv, and the camera looks at Marv, then when it returns to Harry, the phone is off the hook.
Corrected entry: At the beginning, the mum is on the phone and right before Kevin jumps on to the bed, she was saying, 'No, we're not taking the dog, we're putting him in a kennel.' We never see a dog or any evidence of a dog in either this movie or its sequel.
Corrected entry: There is no such thing as a fully booked flight, especially a long-haul flight like the one Mrs. McCallister needs. Two or three seats are always kept spare in case of emergencies like this one. If not required they are given or sold cheaply to airline employees. If an airline would not find her a seat the U.S. Embassy in Paris would. One phone call from an embassy staffer and Mrs. McCallister would be on a flight. She is not stupid - she would know exactly what to do.
Corrected entry: When Kevin orders his own cheese pizza and has it delivered, he has some fun with the delivery guy. He plays the video in which someone gets shot and killed. The pizza guy is obviously scared and runs away, believing that he is being shot at. Surely someone who thinks they have just been threatened by a gun would either call the police or investigate further. And if the police got a call of that nature, they would definitely check it out.
Corrected entry: On the morning that Kevin wakes up looking for his family, his hair changes in each scene and stands up straighter on top.
Corrected entry: When Marv is trying to break into the basement with the crowbar but slips on the ice, he hooks the crowbar on the sill of the door and then slips again. The crowbar then falls on his head. The mistake is that when he slips and the crowbar is hanging it is not hooked on the sill of the door, but is obviously hanging by a wire as it swings freely in front of the door.