Southwest said the two problems didn’t appear to be related following an investigation into the issue.
Southwest Airlines canceled 500 flights, 15% of its schedule, Tuesday as it struggled with connectivity issues, a day after technical problem with a weather data supplier delayed hundreds of flights.
The Federal Aviation Administration briefly issued a nationwide ground stop for Southwest, which prevented its flights from taking off.
More than 900 Southwest flights were delayed on Tuesday, close to 30% of the carrier’s schedule, according to flight tracking site FlightAware but the airline said operations had returned to normal by Tuesday afternoon.
“Southwest is in the process of resuming normal operations after a brief pause in our flight activity resulting from intermittent performance issues with our network connectivity Tuesday afternoon,” Southwest spokesman Chris Mainz said in a statement.
“Our Teams are working quickly to minimize flight disruptions and Customer impact. We appreciate our Customers’ patience as we work to get them to their destinations.”