Quickest would be overnight air, Fed Ex is a decent carrier, check their policy on live fish though. Safest is double bagged in a styro shipping box, place the first bag inverted into the second bag, this eliminates any corners which could trap the fish. Pack newspaper or other packing in to keep the bags from shifting inside the box. Don't feed for 12 hours before shipping, as they are fry. Adults fast for 24 to 48 hours, depending on the size & type of fish. Bag with 1/3 water, 2/3 air. This time of year include 1 small heat pack, tape it to the box lid.
Easiest way would be find a lfs to ship them for you.