Alaska Airlines is expanding from its West Coast hubs, especially in San Diego and Portland. And, the carrier announced new service to Tulsa and Eureka, California.

A laska Airlines said Friday it is still working to "normalize operations" a day after a significant IT outage resulted in a system-wide, hourslong ground stop of flights for Alaska and Horizon.

Alaska Airlines already tried to shore up its IT infrastructure after an outage in July forced the Seattle-based company to ground flights across the country.