Michelle,
Clay has a good description of how to ship snakes
here
However, FedEx is the only overnight carrier that accepts snakes (before anybody says anything, here it is -)
by policy...and they require you to go through a simple certification process. I haven't used Delta cargo/freight in a long time, so I don't know what their requirements are...but the problem with air freight is that there is no guaranteed arrival time. Packages can get bumped, and you pretty much can do nothing but wait. In your situation, it might be easier to find somebody that can do it for you...but you do have time to get the FedEx paperwork squared away, if you choose to go that route. THere are several threads on here about how to do that.