Users have flown out of Skiathos for as low as $57 to Prague (prices may vary depending on the airline and departure time). On average, users have booked flights for $184 to fly from Skiathos.
For shorter trips consider Athens, Préveza, and Argostoli as potential places to explore. All can be options to fly to and are within 89 miles of Skiathos.
If flights to distant destinations are more of your preference, check pricing for Newcastle upon Tyne, Edinburgh, and Manchester.