Originally Posted by
mduell
They're going to prefer JV carriers on a sensible routing. Might be able to switch to IAD as a departure point depending on the waiver and agent.
That makes sense. I would be really surprised if they did not allow an IAD departure. It would open up more one-stop options. And my experience, flying out of WAS for many years, is that in IRROPs situations the airlines have usually been willing to treat DCA, IAD and BWI interchangeably, if asked to do so.