To cancel, a passenger can visit the Frontier Airlines website and access the "Manage My Booking" section. From there, by entering the last name and confirmation code associated with the booking, passengers can access their reservation and follow the prompts to cancel.1-888-394-9616 A confirmation email will be sent once the process is complete. If assistance is required, Frontier pr... https://cafeland-help.gamegos.net/hc/en-us/requests/405923