The "Wanna Get Away" fare is usually an internet fare and a really low fare that is available only for a limited time. If you book a WGA fare and later change.
Wanna Get Away Plus vs Wanna Get Away on Southwest Airlines
At Southwest®, we offer four fares to get you more out of every flight: Business Select®, Anytime, Wanna Get Away Plus™, and Wanna Get Away®.
Wanna Get Away Flights are the most affordable flights offered by Southwest Airlines. When you buy a Wanna Get Away ticket, you cannot choose or have a seat.
Southwest wanna get away ticket or fares are nonrefundable but it may be applied toward for your future travel with Southwest Airlines for the originally. Southwest grouped its lowest fares awhile back into the "Wanna Get Away" naming convention. These are the fares that are non-refundable, usually have an advance. The Wanna Get Away price is just a sale price and doesn't have anything to do with which group you would be in for boarding the plane.