Cuba might get the short end of this one. If it becomes too embarrassing for our military/government they might cut off relations. And Canadian tourism is a big sustainer of Cuban coffers. Canada could cut off that income by blocking travel there, or even just declaring it as an "avoid all travel" zone, effectively cutting off tourism.
The truth is, we don't know what's going on. Maybe this was a deliberate decision to get closer to the Russians without triggering an incident. Maybe the US knew about this and approved it. Maybe it was a blunder, but we can't just assume it was.