Southwest does it right

Southwest airlines has one type of plane.

One set of spare parts.
One set of mechanics. They can move mechaincs from city to city and not have to worry about what planes they are certified on.
No wacky pricing models - One way costs more than round trip - If you stay over a Sat it is 80% less

Let them all close up, someone like Richard Branson will launch Virgin airlines here in the US (I know that foreign airlines can not takeoff and land in US cities, the law would be changed) and start making money.

-M