91 milesThe distance between Mykonos and Santorini is around 147 km (91 miles).
Is Mykonos or Santorini more expensive?
While they are the most popular islands in Greece, they are also the most expensive to visit out of all Greek islands combined, which is why locals tend to avoid them. However, there is a slight cost difference between the two, and as it turns out, here is the winner: Mykonos is the more affordable island to visit.