Frontier Group Holdings, Inc.

Revenue: $1.5B DATA SUMMARY: 2.4M~ records containing: significant PII, customer support cases, flight and travel information, complaint records, baggage details, and customer support email communications.

Frontier Airlines based in Denver, Colorado, a business – retail or merchant entity reported a data breach to the Texas Attorney General. The breach was discovered on 2026-06-18 and reported on 2026-07-14. 679 Texas residents were affected. 11,482 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information;Driver’s License number;Government-issued ID number (e.g. passport, state ID card);Other;Date of Birth. Consumers were notified via U.S. Mail.

Frontier Airlines issued a Massachusetts data breach notice (Ref 2026-1139) dated July 9, 2026. The incident involved unauthorized access to employee records containing PII, including SSNs, driver's license numbers, and passport/visa data. Frontier strengthened access controls, improved system monitoring, and provided 24 months of complimentary credit monitoring via Experian IdentityWorks to affected staff.

Frontier Airlines notified the NH Attorney General of a data security incident affecting 11 New Hampshire residents. On June 8, 2026, Frontier became aware of potential unauthorized access. An investigation determined that an unauthorized third party accessed a data storage account on May 12 and June 3, 2026, potentially downloading personal information including names, addresses, SSNs, and driver's license numbers of Frontier employees. The incident is contained. Frontier engaged forensic investigators, notified law enforcement, secured the account, implemented security enhancements, and offered credit monitoring.

Frontier Airlines notified Nebraska AG of a data breach discovered on June 18, 2026. Unauthorized access occurred between May 12 and June 3, 2026, affecting employee and customer data including SSNs, driver's licenses, and passport numbers. The incident is contained. Law enforcement was notified, and a third-party firm investigated. Credit monitoring via Experian was offered.

Frontier Airlines reported a data breach to the Vermont Attorney General. The breach was reported to the AGO on 2026-07-09. The reporting organization type is Other Commercial. 6 Vermont residents were affected. Categories of data breached: Social Security Numbers.

Frontier Airlines notified customers in May 2017 that a former employee may have viewed and disclosed personal and financial information, including SSNs and bank details. The company notified law enforcement and offered 24 months of credit monitoring and identity theft protection via ID Experts.

Frontier Airlines reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2017-05-19. 2 Massachusetts residents were affected. The report records the breach type as electronic.

Frontier Airlines reported a data security incident where a former employee viewed and disclosed personal information of other employees. Affected data included names, addresses, DOBs, SSNs, and bank account numbers. Four New Hampshire residents were notified on May 19, 2017. The company offered two years of credit monitoring.