If you really want to delay a plane, how about a non-orthodox woman suggesting to a Hasid that she is going to talk to sit next to him and talk about how marvelous the city of Tel Aviv is for promoting Gay Pride.....
Seriously though it is a very small minority (less than 0.1% of Jews - all members of one discredited sect who are shunned by absolutely every other Jew) who actively work against Israel and then there are some Hasidic sects who would prefer that Israel was much more 'Jewish' - read observant (like Saudi Arabia) - but will still in some shape or form be part of the spectrum of citizens.
It is interesting that during the summer, when Israel was being attacked by rockets from Gaza, there was a significant bond between all sectors of Israeli society making sure that soldiers were suitable fed, clothed, rested & spiritually cared for. This included Druze families from the north (who serve in the IDF), Hasids from Jerusalem and even the Peace Now secularists who usually decry any Israeli Army action as terrorism even if it is to save their own hides. Being attacked makes you concentrate on what is important in life and if that means working together with people you would not normally associate with, then so be it. It's a pity El Al can't use that method on its planes.........