Thanks for replies. I'm not simply chasing an upgrade I just have no idea what the attrition is at many of the airlines, it definitely has to factor into the equation though. I'm pretty sure the legacy carriers, like Alaska, have lots of retirements happening. The new younger companies may be expanding fast enough to have short times as well but I suppose the legacy is a safer bet for my career that would be another 25 years or so.
I'll look into some financial analyst stuff I guessto see how Alaska is looking into the future.