By train to Kalmar
There are many trains a day to Stockholm, Gothenburg and Malmö/Copenhagen on the Kust till Kust and Öresund train lines. There are also trains from Karlskrona. From Linköping, you can take the Kustpilen train that also stops at Blomstermåla, Högsby, Hultsfred and Vimmerby.
For additional information, see their websites to the right under “More information”.