Please check the official website for opening hours - they vary according to the entrance.
Jan - Mar, Nov - Dec:
Adults: 55 HRK
Students: 45 HRK
Children (7 - 18): 35 HRK
Children under 7: free
Apr - Jun, Sep - Oct:
Adults: 110 HRK
Students: 80 HRK
Children (7 - 18): 55 HRK
Children under 7: free
Jul - Aug:
Adults: 180 HRK
Students: 110 HRK
Children (7 - 18): 70 HRK
Children under 7: free
Wikipedia https://ko.wikipedia.org/wiki/플리트비체_국립공원
Official Website https://np-plitvicka-jezera.hr/
좌표 44°51'4.374" N 15°35'17.293" E