The guy misses the rabbit with the suitcase and the girl spears it. In the next scene they are back at the camp cooking what is supposed to be a rabbit but what we see is a chicken. Rabbits don't have wings and drumsticks.
A character uses a severed arm as a splint for his broken leg. While climbing up a cliff the splint is clearly visible. In the next shot, looking up the cliff from below the character, the splint is missing. When he reaches the top the splint is there again.
At the beginning in the cave, a guy tries to shoot Yeti with his revolver. It clicks twice, but no discharge. Then a closeup shows the weapon is frozen, implying this is the fault for the failure. However, if it clicked twice, the action worked, and the firing pin would have struck the primer in the cartridge, and the gun should have fired.
The opening scene of the movie the screen states "Himalayas", and that the elevation is 19,000 feet. However, there should be no trees at this elevation. The tree line for vegetation is 14,800 max for this region of the world.
The outside shots of the plane shows it as a Boeing 747, however, the interior of the plane is one of a very narrow 737 with one aisle and two sets of three seats per row. The 747 has two aisles with at least two more seats per row.
When we see the storm outside the plane the sky is very dark, but from the inside of the plane there's bright, white light outside the windows.
After the crash, the survivors are desperate for lighters or matches so they can get a fire going, despite the fact that burning debris is all around them.
The American college football team is ostensibly on its way to play a game in Japan. There's no explanation as to why a flight from the US to Japan would be crossing over the Himalayas.