Most were flights to and from Charlotte and Philadelphia.
"Quickly?" one traveler tweeted with a photo of hundreds of passengers in the airport.
WBTV reports 275 flights were canceled Thursday night, including 120 at Charlotte-Douglas International Airport.
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"Our team members are focused on taking care of our customers by accommodating them on mainline flights or other regional carriers". Travel through Charlotte-Douglas International Airport is particularly affected, where almost half of the daily schedule was canceled.
A technical problem grounded American Airlines flights Thursday, stranding thousands of passengers. American Airlines flights set for Friday are continuing on as scheduled, officials said, CBS-affiliated WSPA reported.
Around 2:45 p.m. the company tweeted about having a technical issue that was impacting several of their digital operating systems, including their mobile app and self-service kiosks at the airport where passengers can usually check-in and get boarding passes.
PSA's website says the airline operates 35 Bombardier CRJ200 aircraft, 40 Bombardier CRJ700 aircraft and 54 Bombardier CRJ900 aircraft. "The issue has been resolved and we apologize to our customers for the inconvenience", the airlines told Newsweek.