The first routes were operated with 2 Avro RJ-100 (SX-DVA and SX-DVB) as follows (from my archive). Notice the almost identical flight numbers (except for the CHQ/HER which swapped). Also notice the 40/45 min. turn arounds for the AR1 (then still with 100 seats).
A3 first timetable
In September 99 and December 99 two more were delivered, followed by two more in Summer 00. By then they have also acquired Air Greece and they also had the 3 ATR72.