It's not pretty simple if travel is an insignificant part of your job that you only undertake once every year or few years. (You shouldn't casually suggest that

It's not pretty simple if travel is an insignificant part of your job that you only undertake once every year or few years. (You shouldn't casually suggest that someone quit their job over something that might be and probably is trivial just because they don't like it. It's disingenuous. Note, I didn't downvote you, though I thought about it.) But there are better solutions than that, anyway. Corporate travel policies might only reimburse the cheapest fair, but you can often book a better fair and reimburse the cheapest rate while paying the discrepancy yourself if you wish (which is how you might fly first class).