Currently, this route is only operated by Seajets.
The distance from Santorini to Mykonos ports by ferry is 118 kilometres, that's about 73 miles or 64 nautical miles. However, the exact distance may depend on the route you take.
You can travel as a foot passenger or with your vehicle on this route.
The cheapest price for a one way crossing by foot in the summer is about 69.7 euros, and for a car with one person about 50 eurosClick Book Now and use the booking form to get the latest prices and see the real sailing dates for all ferries on the Santorini - Mykonos route.
I travelled with seajets on this route. Last July. It was a bit bumpy but worth the time saving IMO