Continuity mistake: After telling Tuneman that he needs to board the moving bus, Jack pushes the Jaguar several car lengths forward so that he'll have ample distance to smash the door off. Meanwhile, we can see dotted white lines on the pavement between the Jaguar and the bus. But look over Jack's shoulder as he says "Are you insured?" and notice how two pairs of solid yellow lines have momentarily taken place of the white ones. (00:39:05)ryguy_1983
Continuity mistake: In the shot where Payne gives Jack permission to unload Sam from the bus, listen closely to the male news anchor on the immediate right. He reassures his viewing audience that the bus hasn't exploded, although a woman was caught in the blast and fell. This report airs roughly two minutes before the incident even takes place. (00:57:05 - 00:59:15)ryguy_1983
Continuity mistake: An obvious stunt double is briefly visible pushing a baby carriage full of cans into the crosswalk as Annie unknowingly rams the bus into it. Initially we see an older woman pushing the carriage along after chatting with her friend. In a view from within the moving bus's front window, however, a much younger woman has briefly taken her place for a couple of shots. (00:50:05)ryguy_1983
Continuity mistake: The Suburban that swerves onto the LAX runway to retrieve Jack has no scaffold equipped on its driver's side, but we know for a fact that moments later Jack actually exits the bus and steps safely onto one. Somehow the Suburban has managed to gain a scaffold at cruising speed, but this couldn't have possibly happened unless a different, identical-looking vehicle with a scaffold pulled up at some point during the scene to take its place. (01:10:05 - 01:11:15)ryguy_1983
Continuity mistake: When the crane breaks free from its bolts and starts flying towards some ventilation windows, it obliterates the upper pair. However in the next view from within an air duct, both of these windows just swing open freely as the crane busts through, and yet they barely appear to have suffered a scratch or bend in the process. (00:15:00)ryguy_1983
Continuity mistake: In the scene where the Pacific Courier Freight plane gets blown up, you can see that it is being towed alongside another plane, and some people standing/walking around next to it. In the next shot, where we see the camera moving closer and closer to the plane from the bus's perspective, the runway the plane was just being towed on is gone, as is the plane it was going past a moment ago along with the people. There was no time between shots for the plane to have been moved so far away. (01:30:35)
Continuity mistake: At the beginning of the movie we see Keanu Reeves taking Jeff Daniels "out of the equation" by shooting him in the leg. We realise it's a serious injury as he requires the use of a cane when receiving his medal. However later on in the movie when they move in on Dennis Hopper's home, which takes place the next day, Daniels is part of the assault team and has no cane, no limp and is obviously very mobile.
Continuity mistake: When Jack drives on the shoulder, honking his horn to let people know that he's coming, he's pressing on a silver ring, which is the horn, but in the next shot, it's gone. While the ring only covers half the wheel, as he's going almost entirely straight it should always be in the same position. (00:31:35)
Continuity mistake: In the shots before the bus blows up the Pacific Courier Freight plane, you can see that the vehicle towing it and the plane itself are no longer moving, as opposed to a couple of shots before this where the tow vehicle and plane are moving at a good pace. You also can no longer see the man who is supposed to be driving the tow vehicle (who might have run for it, but there's minimal time).