Since I have found Flyer Talk I have become a wiz at finding great rates. But now I want to fly from WAS to SanDiego to visit my son...rent a car and drive up to San Francisco...and fly back to Washington from there. The problem is I have no idea how to enter an open jaw or multiple cities on a search engine like Travelocity, SideStep, etc. Do I just have to call the airlines or is there a simple way to do this on the net.

Thanks
Doc