UAL Stock: What to Know About the United Airlines Flights Cancelled Today, airline stocks are once again in focus for investors. Among the largest U.S. carriers to see declines is United Airlines (NASDAQ: UAL ). At the time of writing, UAL stock has dropped approximately 3% from yesterday’s close. This move appears to be tied to a wave of flight cancellations across the U.S. Today, more than 700 flights have been cancelled , with nearly 860 flights cancelled yesterday. As people look to travel to see family for this upcoming Independence Day, airport congestion is picking up as uncertainty reigns supreme in this high-demand season. Notably, Delta Air Lines (NYSE: DAL ) has led the major airlines with more than 200 flight cancellations today. United has seen approximately 196 flights cancelled as of early this morning, with its peers also seeing higher-than average cancellations. Let’s dive into what’s behind these cancellations and what they mean for investors. UAL Stock Continues to Be Hit by High Cancellations Industry-wide concerns about air traffic control appear to be a key pain point for airlines as well as consumers.