According to a report by Simple Flying, a medical emergency occurred on a Frontier flight where four out of five crew members fell ill. The flight attendants on board the Airbus A321 aircraft reportedly experienced severe headaches during the flight.

Following the crew illness, two of the affected flight attendants were transported to a hospital for medical treatment. The current condition of the hospitalized crew members has not been disclosed in the report.

As a result of the incident, the Airbus A321 jet remains grounded, and Frontier has been forced to cancel multiple flights. The exact cause of the flight attendants' illness is currently unknown.