The Wall Street Journal: United, Delta cancel dozens of holiday-weekend flights as omicron spreadsMarket Watch • 12/24/21
United Cancels Over 100 Christmas Eve Flights, Citing Staff Shortages Due To Omicron SurgeForbes • 12/24/21
U.S. airline industry steps up push for CDC to cut quarantine time for breakthrough Covid cases, warning of labor shortagesCNBC • 12/23/21
Airlines' request to reduce Covid quarantine time 'wrong move,' flight attendants union saysCNBC • 12/23/21
Holiday Travel Amid Omicron: Flights Projected To Hit Pandemic-Era Highs As United CEO Says People Aren't CancelingForbes • 12/20/21
United Airlines CEO says 100 of its regional jets are grounded because of a pilot shortageBusiness Insider • 12/16/21
Airline CEOs face Senate panel over flight cancellations after taking $54 billion in taxpayer aidCNBC • 12/15/21
United Airlines (UAL) Dips More Than Broader Markets: What You Should KnowZacks Investment Research • 12/15/21