Continuity mistake: When Snake sees Eliot in the airplane terminal, he shoots at him once, shattering only the top half of the glass door (which is split in two by a metal bar). Eliot then leaves the terminal heading outside. He ducks under the bar and through the door to go outside.
Continuity mistake: When the drunk security guard trips, he falls a good distance away from the overpass/building behind him, but when Andrew runs off with the gun the security guard is lying much closer - also note the speed bumps.
Continuity mistake: In the exterior shots of the airplane heading to Bermuda, there are only six windows between the cockpit and the open back door. Yet, in the interior shots there are at least seven.