My recommendation is:
Ferry/Speed boat to Ko Samui. Plane to Phuket. Ferry/Speed Boat to Ko Phi Phi.
If you leave early enough you should be able to make it in a day (I've never done it all in one day but I it should be possible -- no promises though!)
#2 cubedweller has been a member since 23/2/2008. Posts: 35
it's have many way for transport to phi phi island.
if you have the a lot of money you can rent the speed boat direct to koh phi phi.
if you have the Budged Money, you can take a ferry from phan ngan to surathani and take a bus to phuket or krabi town after that you can go to koh phi phi by ferry/speedboat.
Shots are here - Phi Phi Transportation
#3 bareman has been a member since 13/12/2010. Posts: 5