I'm glad your companies work that way - it's certainly better for the employee if you're booking many trips *and* don't have a centrally-billed process for airfare.

Mine haven't, including a couple large-cap U.S. firms that most would recognize, although there may have been exception processes if we were talking about tens of thousands of dollars of airfare. I never got that high...sometimes I'd be floating a few grand but I just covered it. The exception process *probably* would have been to charge a corporate account somewhere - not the pre-payment of the travel to the employee. And since the miles/points associated with using my CC were worth more than investment loss on a few weeks of a few grand, I was fine with it.

As you might guess, even when I flew a lot, we typically flew Y. Sadly, even when I was working in Europe and flying back and forth to the U.S. I had wide latitude on most other areas of the travel policy - hotels, meals, etc. - but not paid J fares that would have stretched my ability to float the funds.