A post from the airline on X apologized for the outage and said its IT team is working "as quickly as possible to get the system restored."

An American Airlines IT outage disrupted its app and website, prompting the FAA to issue a ground stop for all non-airborne flights Tuesday.

American Airlines flights not in the air were being held for a nationwide ground stop Tuesday evening because of an IT outage, according to an FAA advisory.

Though the ground stop was brief, the ripple effect of halting all planes from such a large carrier will take some time to fully dissipate.