Allegiant Airlines experienced a significant outage that caused flight disruptions across the country.
The outage was reported on a busy travel day, impacting thousands of passengers.
Allegiant Airlines' system failure resulted in flight cancellations and delays.
Passengers were left stranded at airports, waiting for updates on the status of their flights.
Flight schedules were severely impacted, with many flights delayed or cancelled altogether.
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Allegiant Air Outage
Allegiant Air experienced a computer system outage on July 18, disrupting flights and affecting thousands of customers.
About 4,000 customers suffered disrupted flights after the outage began around 8:25 a.m. ET and lasted until about 4 p.m. ET.
The outage forced Allegiant employees to manually check customers in for their flights, dramatically affecting the company's ability to stick to its flight schedule.
Eight flights were cancelled and 18 were rescheduled to operate on Saturday, July 19.
Dozens of other Allegiant flights were delayed, likely affecting thousands of additional customers.
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Unlike most U.S. carriers, Allegiant does not offer daily service on most of its routes, so if a flight is canceled, it could be several days until the carrier's next scheduled flight, depending on the route.
Allegiant apologized for the issue and promised to provide compensation for affected fliers.
Customers who were delayed overnight will receive a full refund of the price of their affected flight.
Customers whose flights were canceled will receive a full refund of the price of their itinerary, a $300 voucher for future travel on Allegiant, and reimbursement of "reasonable alternative transportation expenses".
If you're experiencing issues accessing Allegiant's website, you can try clearing your browser's cache and cookies or using a different DNS service.
Allegiant's website returned a ping time of 14.29 ms on September 19, 2025, but experienced outages on September 20, 2025, with a ping time of 66.47 ms.
Here's a breakdown of Allegiant's service status history:
If you're having trouble accessing Allegiant's website, you can submit a comment about the service status or report an issue to help others.
Flight Disruptions
About 4,000 Allegiant customers suffered disrupted flights on July 18 due to a computer system outage that lasted until 4 p.m. ET.
The outage forced Allegiant employees to manually check customers in for their flights, affecting the company's ability to stick to its flight schedule.
Eight Allegiant flights were cancelled and another 18 were rescheduled to operate on July 19.
Dozens of other Allegiant flights were delayed on July 18, likely affecting thousands of additional customers.
If a flight is canceled, it could be several days until the carrier's next scheduled flight, depending on the route, since Allegiant doesn't offer daily service on most routes.
Allegiant has apologized for the issue and will provide compensation for affected fliers, including a full refund of the price of passengers' affected flight.
For customers who have been delayed overnight, Allegiant will provide a full refund of the price of passengers' affected flight.
For customers whose flights have been canceled, Allegiant will offer a full refund of the price of passengers' itinerary, a $300 voucher for future travel on Allegiant, and reimbursement of "reasonable alternative transportation expenses".
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