Originally Posted by
Ditto
There are busses to Keukenhof from Schiphol, Haarlem and Leiden, so if you are in Amsterdam you will need to get to one of those places first by train, so doing it directly from the airport is a good idea.
Saves a little time if you go right away, but probably not the end of the world if the logistics become difficult and you need to do it another day. It's a short train ride from Amsterdam to Schipol to pick up the bus. Or not a bad idea to combine it with a little time in Haarlem for a day.