Taxi from the airport to the port area (lots of hotels around) will be $28.00 one way.
Since the port is near the French Quarter...basically at the end of Canal Street..
there are LOTS of hotels.
Just to go one of the sights like Travelocity and type in Canal in New Orleans...a ton of hotels will pop up.
Some of them are pricey....but there are the kinds like Hampton Inn, Drury Inn, etc that are avaiable.
We are staying at the Maison Suites because there is where the Blogger's are staying. It is about a $10 taxi ride to the port. If you mention Big Ed's Evil Krewe...I think you can still get a room for $89.00. Last I heard they still had some rooms available...so if you don't find anything closer to the port that is cheaper ... give them a try.