One of America's largest regional carriers, SkyWest Airlines, has canceled hundreds of flights three days in a row, and it's not the only airline impacted.
The Utah-based carrier operates flights for American, Delta, United and Alaska airlines.
"SkyWest experienced an internal technical issue, resulting in approximately 700 flight cancellations before the issue was resolved Thursday evening," SkyWest told USA TODAY in a statement. "We apologize to customers for the inconvenience."
The airline said it continued to experience operational disruptions as it worked to get crew and aircraft into position. More than 700 SkyWest flights were canceled Friday, according to FlightAware, which tracks flight cancellations and delays in real time. Disruptions continued the following day, with more than 100 flights canceled Saturday.
SkyWest said Saturday that it is "focused on efforts to return to normal operations as quickly as possible."
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United Airlines' website had said the issue was a server outage at SkyWest.
Delta Air Lines told USA TODAY, "Our technical teams engaged with SkyWest IT to resolve the issue and minimize the impact on our customers. We are working with customers directly to accommodate them to their destination as soon as possible and apologize for the inconvenience."
Roughly 170 of American Airlines' flights were impacted Thursday and about 50 more were affected Friday, the airline told USA TODAY, adding that it's been working to re-accommodate passengers and provide hotel vouchers as needed.
Alaska Airlines told USA TODAY that 80 of its flights were canceled Thursday and 53 were canceled Friday, though more were possible. "We apologize for the inconvenience this has caused for our guests," the airline said. "We’re providing services to them as we work to get impacted travelers to their destinations as quickly as possible."
According to its website, SkyWest serves 236 destinations across North America, and it carried 43 million passengers in 2019.
Travelers are advised to check their flight status before leaving for the airport and to reach out to their airline if their flights have been canceled or delayed.
This article originally appeared on USA TODAY: SkyWest Airlines outage: American, United, Delta, Alaska impacted