did flight from phuket to koh samui and return april
price 2200baht e/w plane on time trip good took about 50 mins
be careful on return 400 baht airport fee (heard its 500 baht now)
they also fly samui to bangkok
next time may go bangkok-samui-phuket-bangkok
http://www.bangkokair.com/en/package/ this is a package ticket for travel within thailand