http://www.ferries.gr/hfd/default.htm check this
Thank you very much
Sorry to be so ignorant but I cannot find this on the website. Can you confirm that this trip exists? Thanks.
I got this reply from the ferry company:
In reply to your e-mail, dated March 16th we would like to inform you that our timetables for flying cat 4 have not been officially announced yet. Therefore, we wish to suggest you that you may consult our web site (approximately by the end of this week) at www.hellenicseaways.gr which is always updated and revised, featuring updated timetables, prices per person. In case of interest you may proceed with your bookings through our web site, by debiting credit card (visa or MasterCard). Furthermore, please kindly note that after your on-line reservation is completed you shall receive a confirmation with all your booking details.
I found a very helpul review of everything one wants to know about booking Greek ferries at: www.athensguide.com/ferries.html ... definitely worth reading..
you can visit www.openseas.gr/OPENSEAS/servlet/Openseas
Also you can take the small plane
the highspeed is the fastest from mykonos to santorini ok yes it takes about 3hrs and 15 mins ,
if ya going to santorini go for the day has great views but the beaches are black volcanic rock get the late boat back to IOS ISLAND only 35 mins away has the best beaches in all the greek islands with enough coves to have all to your self to skinny dip