Below are their least profitable routes, according to AI. Be interesting to see if that is what they shutdown first. Alternatively, it may be a matter of placing the planes in the least expensive hangers while they wit out the strike.

Key least profitable or discontinued routes include: Toronto-(YYZ) to Vancouver (YVR) Montreal to Detroit (DTW), Minneapolis (MSP) Toronto to Indianapolis (IND) Vancouver to Nashville (BNA), Tampa (TPA) Several Western Canada routes from Calgary to smaller cities