Southwest Airlines restored its flight schedule on Friday, ending a weeklong stretch of mass cancellations that disrupted millions of travelers’ holiday plans. 

After canceling roughly two-thirds of its flights since the start of the long holiday weekend, Southwest canceled just 1 percent of its Friday trips, according to flight tracking website FlightAware. 

But questions remain about how quickly Southwest can make customers whole, whether it can prevent this kind of meltdown from happening again and how lawmakers and regulators in the nation’s capital will respond to the fiasco.