In a message to Alaska Airlines employees Thursday evening, CEO Ben Minicucci said the high level of flight cancellations since April will continue through this month but added that stability should return to the schedule in June. “Of the 1,200 flights that we operate every day, we’ve been canceling about 50 of them, roughly 4%. This is coming at a time when flights are already full, so rebooking options are limited and many of our guests have experienced extraordinarily long hold times,” Minicucci wrote. “We will continue to see these cancels through June 1st. We are working to manage these t…