The airlines said it experienced an IT outage that was affecting its operations, which would have "residual impacts" for the rest of the evening.

Alaska Airlines has requested a ground stop for all of its flights, according to the Federal Aviation Administration. "At approximately 8 p.m. Pacific on Sunday, Alaska Airlines experienced an IT outage that’s impacting our operations.

Alaska Airlines requested a nationwide ground stop for all its mainline aircraft on Sunday, according to the Federal Aviation Administration’s (FAA) status page. The FAA’s website showed that the order affected all destinations served by Alaska Airlines’ mainline fleet.