The next new episode of American Dad will be after Easter on Sunday April 19th with Delorean Story-An:-
“Stan is excited about finally building his dream car: a DeLorean. Francine encourages him to include Steve, so the two take a road trip in search of doors for the sports car. The trip veers off-track when there is a mad dash across the country to get the last set of doors available.”
Before then there will be a number of chances to catch-up with some already-aired episodes of American Dad as part of Fox’s Animation Domination line-up.