Southwest Airlines cancels more than 1,000 Sunday flights

NEW YORK (AP) — Southwest Airlines canceled hundreds of flights over the weekend, blaming the woes on air traffic control issues and weather.

The airline canceled more than 1,000 flights in total, or 29% of its schedule, as of 7 p.m. ET Sunday, according to flight tracker FlightAware. That was the highest rate by far of the major U.S. airlines. Next in line was Allegiant, which canceled 6% of its flights. American Airlines canceled 5% of its flights, while Spirit canceled 4% on Sunday, according to the flight tracker. On Saturday, Southwest Airlines canceled more than 800 flights.

Southwest Airlines said in an emailed statement that it had experienced weather challenges in its Florida airports at the beginning of the weekend, which were compounded by unexpected air traffic control issues in the same region. Those issues triggered delays and prompted significant cancellations for the airlines beginning Friday evening.

“We’ve continued diligent work throughout the weekend to reset our operation with a focus on getting aircraft and crews repositioned to take care of our customers," said Southwest Airlines. “With fewer frequencies between cities in our current schedule, recovering during operational challenges is more difficult and prolonged."

The company said that it's allowing customers to explore self-service rebooking options on Southwest.com, where they can get updates on the status of their travel.

However, Henry H. Harteveldt, president and travel industry analyst at The Atmosphere Research Group, based in San Francisco, points to other causes for the cancellations.

First, he says Southwest has scheduled more flights than it can handle, a problem that started in June. He also noted that Southwest operates what’s known as a point-to-point route network, and when a...