A hardware failure at an Alaska Airlines data center caused a system-wide “ground stop of flights” on Sunday night, the airline said. The airline has canceled more than 150 flights at various airports, including 64 Monday morning, with additional flight disruptions expected.

Alaska Airlines passengers are still reeling on Tuesday after a system-wide IT outage left thousands stranded at airports across the country.

Alaska Airlines and Boeing reached an undisclosed settlement with passengers who sued for emotional and physical injuries after a door plug incident on a January 2024 flight.