YKU and YUL are approximately 620 miles apart by great-circle distance.
No. Roame's current schedule feed lists service with stops from YKU to YUL, but no nonstop service.
Airlines represented in the current schedule are Air Creebec (YN).
Aircraft listed in the current schedule include De Havilland Canada DHC-8-100 Dash 8 / 8Q (DH1) and DH8.