Bornholmslinjen
You can e.g. fly to Bornholm in just 35 minutes from Copenhagen or in about 1 hour and 10 minutes from Billund and Aalborg in Jutland.
You can also travel by ferry from Ystad in Sweden in just 1 hour and 20 minutes (5 1/2 hours from Køge or 3 1/2 hours from Sassnitz in Germany), or you can get from Copenhagen to Bornholm by car, bus or train within less than three hours.