On Saturday, American Airlines called off 543 flights, which makes up one fifth of its schedule. As many as 553 flights were cancelled on Sunday.
According to CNBC, on Friday the company also cancelled 340 of its flights. The airline referred to bad weather conditions and staffing problems.
“Due to weather conditions (we) are experiencing a shortage of personnel as the crew members find themselves off their regular routes,” the note says.
The company faced problems on Thursday due to wind gusts, which caused flight disruptions in the Texas airport, according to American Airlines Chief Operating Officer David Seymour. Crew members also were out of position for the next flights over severe weather conditions.