It’s actually 15 weekly - daily to Sibiu, 5x weekly to Bucharest (Mon/Wed/Thu/Fri/Sun) and 3x weekly to Vilnius (Tue/Thu/Sun).
The Tue and Sat departures to Vilnius are at 17:55, otherwise the rest are quite late - 19:40 on Thu, Bucharest 21:25 and Sibiu 21:30. This seems good for the airport as it avoids peak and will allow retail/f&b units to open longer with more activity.