Weekend snarl is the latest difficulty for the carrier after it struggled over the summer

Southwest Airlines Co. canceled more than 1,800 flights over the weekend, citing bad weather and air-traffic-control problems in Florida that rippled throughout its operation.

The airline canceled over 1,000 flights Sunday, or 28% of its schedule, according to FlightAware, a flight-tracking website. Over 500 flights were delayed.

The problems started Friday evening, when severe weather in Florida prompted the Federal Aviation Administration to impose an air-traffic-management program, resulting in a large number of cancellations and leaving customers and crew members out of place, an airline spokesperson said Saturday.

Southwest scrambled to reset its network Saturday, canceling more than 800 flights that day, or 24% of its operation, according to FlightAware.

Excerpt from WSJ
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