Flight disruptions continued Saturday at San Antonio International Airport after a nationwide data overload prompted a nearly four-hour ground stop Friday, but airport officials said conditions were improving.

Up to 15 flights were canceled at the airport Saturday, down from Friday, when officials said up to 30 flights were disrupted locally.

The problem triggered a ripple effect across the country, delaying or canceling thousands of flights and leaving travelers scrambling to rebook, find hotel rooms or change plans.