The title of this film is simply Boeing Boeing, the same as the play it was based on and the other three film versions.
In the movie's opening titles, Boeing (707) Boeing (707) appears on the screen, then the credits for the three actresses who play the stewardesses, with each actress's name followed by her body measurements in parentheses. In other words, it's a joke. A bit of a sexist joke by today's sensibilities, I suppose.
IMDb stubbornly lists this film under the title Boeing (707) Boeing (707) apparently because of a policy that all movie titles must be EXACTLY as they appear on-screen, joke or no joke. Scotpens (talk) 23:02, 4 September 2012 (UTC)