Southwest Airlines travelers across the country face more cancellations and flight delays as the work week begins.
The airline has canceled 128 flights for Monday, accounting for the majority of U.S. flight cancellations, according to flight tracker FlightAware. That is on top of nearly 50 Southwest flights canceled Sunday. Additional cancellations are possible. The number of Southwest cancellations for Monday stood at 91 late Sunday and increased to 128 by Monday morning.
The airline has cancelled 29 flights to and from Phoenix Sky Harbor International Airport Monday, according to FlightAware. The airport is one of Southwest's busiest operations, with more than 180 daily non-stop departures.
That is in addition to several cancellations to and from Phoenix on Sunday.
The Phoenix cancellations are the second highest number of Southwest flight disruptions for Monday. Chicago Midway, where Southwest has an even bigger operation, has the most, with 35, according to FlightAware.
Dallas Love Field, where the airline is based, is third, with 25 cancellations on Monday.
In a statement, Southwest reiterated that it warned travelers last week that flight disruptions were possible as it began an accelerated engine inspection program following an April 17 midair engine explosion that killed a passenger. The airline said then that it planned to inspect all engine fan blades made by manufacturer CFM within 30 days.
Passengers are being rebooked on other flights.
Southwest said it's "significant to note" that the number of flight cancellations and delays is minimal, given Southwest's 4,000 daily scheduled flights. The cancellations represent about 1% of its flight operations.
"We will continue our work to minimize flight disruptions by performing inspections overnight while aircraft are not flying, and utilizing spare aircraft, when available,'' the airline said in a statement to the Arizona Republic. "Customers on affected flights will be notified of any changes to their travel plans through proactive updates. As always, customers are encouraged to check their flight status on Southwest.com.''