Watched this trailer before Skyfall earlier today - the film is called "Argo", set around the Iran Hostage crisis
Ben Affleck travels from Washington to Tehran on a BA 747 -you can see it in the trailer at 1:35
http://www.youtube.com/watch?v=QQkdOSwz2Kw
Onboard scenes must play some part since although not shown in the trailer, IMDB lists the rather fabulous Allegra Carpenter as a "British Airways Flight Attendant". One to look out for.....!
http://uk.imdb.com/name/nm4670679/
I guess in reality this should be in the "Celebs on BA" thread though!!