Some very unpleasent news was reported last week by Croatiapress.com , the Croatia News site.
They wrote that WizzAir, the low cost airline, cancelled Zagreb to London flight last Friday , leaving passengers stranded at Zagreb Airport. 

Skyservice Airlines announced that its seasonal scheduled air service from Toronto to Zagreb will commence on 28th of May.
‘Once again the addition of Croatia to our summer network provides more opportunities to our partners and offers exciting vacation experiences for travelers.

Flying from Stockholm, the first SAS - the Scandinavian Airline’s plane, Boeing 737,  landed at Zagreb Airport at the begining of the week.

 In its new summer timetable, Croatia Airlines has introduced direct flights from Croatia to Düsseldorf and Copenhagen:

Due to the huge popularity of Croatian Adriatic coastal resorts amongst Austrian holidaymakers, Austrian Airlines is resuming seasonal flights to Dubrovnik and Split into its summer schedule.