Southwest, Delta, United, JetBlue, American, and Alaska airlines were all facing flight delays on Monday morning because of a technical glitch with a flight-planning, weight and balance program called AeroData.
The glitch forced Southwest to issue a ground stop early on Monday morning and others to delay flights as they waited for AeroData to resolve the issue, which, according to Delta, has been resolved.
"AeroData had a brief technical issue that impacted a few of our regional carriers. The issue has been resolved,” Delta said in a statement.
The outage lasted about 40 minutes, according to a Southwest statement, and forced some carriers to return taxiing planes to their gates.
“AeroData is currently experiencing a technical issue that is impacting multiple carriers. We appreciate your patience during the wait,” American said on its social media on Monday morning.
According to the Federal Aviation Administration, travel advisors and travelers should still contact airlines to get the latest flight information and updates.