This is really important because my mom watched this movie many years ago, but unfortunately she doesn't remember the title, exact date or any of the actors' names. The only thing she remembers is that it's a comedy about a group of people who sort of "live" in the bar of an airport. It's a comedy, she described a scene in which the entire bar started shaking as if there was an earthquake because of all the planes taking off.
That's all we got so far, and that MAYBE it's from the mid-70s, but she's not totally sure about that. I'm SO sorry I couldn't be more specific, this is just literally all she could remember. :( But I really want to find the movie for her, so if anyone has any ideas, that'd be amazing!!!