Winter Storms Cause Nationwide Flight Disruptions for Third Day

United and Alaska Airlines, already grappling with grounding of Boeing 737 Max 9, among most affected.

Frigid temperatures and winter storms have caused thousands of flight delays and cancellations across the United States for the third consecutive day, with more than 4,000 flights affected on Sunday.
The most affected airports are in the northern United States, with Denver, Chicago, and Buffalo experiencing significant disruptions.
Winter weather alerts span from Texas to Virginia, affecting more than 45 million people, including all of Tennessee and Arkansas.
The travel delays are exacerbating an already difficult week for airlines due to the federally mandated grounding of Boeing 737 Max 9 aircraft.
United and Alaska Airlines, the two largest US carriers using the Max 9 aircraft, are among the airlines canceling the most flights.