Southwest Airlines delays and cancels flights for a third day

Hundreds of Southwest Airlines flights were delayed or canceled again on Wednesday as the company sought to resolve disruptions amid a pickup in summer travel.

The headaches began on Monday night, when a problem with a weather data supplier prevented the airline from safely flying planes. The issue was resolved within hours, but on Tuesday the airline suffered its own technological problems, resulting in half of its flights that day being delayed and many being canceled, according to FlightAware, a flight tracking service.

Spillover from that episode caused Wednesday’s problems, the airline said.

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