I have forgotten the name, but there was a movie with Steven Segal about a
high-jacked airliner. His commando team was in another plane that flew
underneath the high-jacked plane and they managed to attach a tube between
the two planes. Then the commandos went through the tube into the other
plane. Compared to what comes next, that part is plausible. Once the
commandos are on the plane they go into this attic type area above all the
seats and use it to traverse the plane. Sort of like a baggage compartment
on top of the plane, but without the baggage. Even though I love science
fiction, even I couldn't suspend belief and accept the plane in this movie.

Another one had Nicolas Cage as a prisoner being transported on a plane.
The plane was basically a flying prison with steel floors, stairs, etc. It
must have had atomic engines to power that thing off the ground.