There are regular trains to Szeged from Budapest and Budapest Airport. The conference venue is only a 15 minute walk from the Szeged railway station, or only a 4 minute tram ride (take tram number 1 or 2, both leaving right from the station; get off at the 4th stop, at Somogyi Street).

http://www.mavcsoport.hu/en

This is the most comfortable and easiest way to get to your accommodation. There are many airport shuttle companies, and you can book your trip online.

http://www.zoldtranszfer.hu/

http://pegazustranszfer.hu/en_EN/online-megrendeles