Southwest Airlines has canceled nearly 2,600 flights so far on Tuesday after canceling over 2,900 on Monday.
The carrier told Insider that “scheduling issues” can also be blamed for the mass flight disruptions.
Senators Edward J. Markey (D-Mass.) and Richard Blumenthal (D-Conn.) said the airline should compensate customers.
Southwest Airlines has blamed its operational meltdown on the busy holiday weekend and the powerful winter storm but said on Tuesday its antiquated scheduling system also played a role.
On Monday, the Dallas-based carrier canceled 74% of its flights, according to FlightAware data. As of 3:30 pm on Tuesday, another 63% have been canceled for a total of about 2,600.
Since its original statement was last updated on Tuesday, Southwest has added to its reasoning for the chaos, telling Insider, “we had issues with our scheduling tools, causing a scheduling issue.”
“We were fully staffed and prepared for the approaching holiday weekend when the severe weather swept across the continent, where Southwest was the largest carrier in 23 of the top 25 travel markets in