The event's 25th edition was supposed to take place at Regensburg this week.
Gerhard Skoff, the conference's initiator and organiser, said tickets will remain valid for the new dates and more information will follow in mid-January.
River Cruise Europe webinar
The Donaukonferenz would have been the industry's first gathering to review and analyse river cruising's 2021 restart.
In order to facilitate a meeting and exchange of views, River Cruise Europe decided at short notice to invite its members for a webinar to review and discuss the season and prospects for this winter and 2022.
River Cruise Europe Chair Monic van der Heyden told Seatrade Cruise News on Tuesday that details and the date will be sent out to all members shortly.