Massive Crowds After Flight Delays and Cancellations Are Chaotic For Passengers. United Airlines Is Trying to Fix That. The airline will roll out a digitized voucher system for passengers with delayed or canceled flights. Previous Article NVIDIA (NVDA): Is This Chip Stock a Worthy Buy? Next Article Is the Real Estate Market on the Verge of a Turnaround or Stuck in a Recurring Pattern? Here's What You Should Know.