jensdad
we must be of the same era as that was my immediate thought that it wasn’t served in Yugoslavia’s hey day!
looking at the map, it’s between Pula and Split. Rijeka’s around there as well which had a fortnightly JAT dc9 flight in the mid 80’s so unless there are no hotels near Zadar should generate some interest.
having said that we flew to NCl/DBV in the 80’s for a holiday in Montenegro. The coach transfer was longer than the flight and passed Budva/Tivat airport which would have been much more convenient perhaps Zadar is a better option than the usual destinations for some areas.