Contact your Airline to find out about the online check-in.
Other questions on the same topic
How can I get in touch with my Airline?
The ways you can contact each Airline are different and are stated on their websites.
If you don't know the web address of your Airline, find it on the list of airlines operating at Bologna airport.
What is the maximum allowed weight for hold luggage?Contact your airline to find out about the allowances of weight and size.