Travel information
Karlskrona is in the south east corner of Sweden, and is best accessed from Copenhagen, or Stockholm.
From Copenhagen, Denmark:
Trains leave Copenhagen's central station and airport (Kastrup) regularly throughout the day to Karlskrona - Timetable here. Departure and destination is København Lufth/Kastrup to Karlskrona Centrum. The train is direct and takes about 3 hours from the airport, leaving Denmark and entering Sweden via the Øresund Bridge.
From Stockholm, Sweden:
Alternatively, if arriving in Stockholm, you can then fly on to Ronneby airport, which is around 30 minutes from Karlskrona centre. The flight takes about 55 minutes and there a number of flights a day during the week. SAS provide most of the flights. Trains from Stockholm centre to Karlskrona are also available and take around 5 hours.
From Amsterdam:
If you are travelling on having attended the EUBS meeting in Amsterdam, then we would recommend that you fly from Amsterdam to Copenhagen (1:25 duration); tickets start at around 100 Euros return. Skyscanner is a good way to source flights.