Why do you need the right to not be searched at an airport or courthouse more than any place else? Speaking in hyperbole, I would rather have my fourth amendment rights broken voluntarily at an airport or by necessity at a courthouse than, for example, while I'm at home sleeping with my family or walking down the street minding my own business. While I disagree with the TSA searches and do not fly for that very reason, I also fundamentally disagree that you most need the fourth amendment protections while entering an airport.
We need standards and accountability if we're willing to accept that situations exist where safety trumps rights. I haven't seen a threat that warranted an ongoing suspension of rights.