I'm self-employed; so I pay for my own trips. I NEVER fly full fare if I can help it. I do charge clients full Y fare when they're reimbursing me, no matter how I actually travel (This even applies when I drive to Richmond, VA) but the client knows this in advance. Regardless of my business relationships, I'd never PAY full fare. If your boss does, then I'd have to say you're a very valued employee.