According to the FAA advisory, Frontier Airlines has grounded all flights across the US due to IT issues. The FAA advisory notes that "all Frontier Airlines (FFT)" destinations are impacted, but only for departing flights.

IT issues at Frontier Airlines triggered a brief ground stop at all of the U.S. budget carrier's destinations on Thursday evening, according to an advisory from the U.S. Federal Aviation Administration.

The Federal Aviation Administration announced that Frontier Airlines implemented a ground stop for all destinations, but lifted the order shortly thereafter.