"Boeing, Boeing" is a very unusual film for the time because although Jerry Lewis is one of the stars of the picture, he neither directed nor wrote it. He's simply there as an actor and isn't quite the same goofy guy he is in his other films. In fact, in some ways he's quite a jerk...a definite departure.
The story is about a super-selfish guy. Bernard (Tony Curtis) is a major womanizer. He's arranged his life in Paris so that he's engaged to three different stewardesses at the same time. It works out because each thinks she's his only woman and because their schedules work out so, they are oblivious to his machinations. However, two things upset his plans...the arrival of Robert (Lewis) and the women's schedules...which suddenly start getting discombobulated. So for most of the film, Bernard works tirelessly to hide each woman from the others...sometimes with Robert's help and sometimes Robert seems to be out for just himself.
This American-made bedroom farce suffers because Bernard and Robert are jerks...and two of the three fiancees seem pretty nasty. The third fiancé is just kind of dumb. Because of all this, the film doesn't work as well as it could and it's obvious that the director and stars try to make up for a somewhat weak plot by putting TONS of energy into their performances. It's not unpleasant but can understand why this isn't one of Lewis' or Curtis' more famous efforts.