Travel help

Boys ive just returned from 2 months in the states and loved it. Me and a few mates are looking to return early next year. Our plan is to do LA , vegas and san diego again then go to san antonio/ austin and then new orleans, miami and orlando. Just wondering the best way to do austin to new orleans and new orleans to miami...flights seem real expensive the same price i paid to get from san Fran to washington dc earlier this Year. Sorry for the long read.

Also if i had to cut new orleans/miami/orlando is there anywhere else we good substitue in that mite save us some cash