An extensive search revealed no information on accessible seating options.
When traveling with a wheelchair, it is advisable to provide written instructions to observe when loading and unloading it in the cargo compartment of the airplane. Removable pieces will be removed as allowed in the written instructions. It is recommended that any removable parts be removed by the customer and either carried onto the airplane to be safely stowed in an overhead bin, under the seat, or as checked baggage. It is also recommended that the instructions be affixed to the device, with the customer having an extra copy.
No plane in the fleet has an accessible restroom
General assistance form: https://www.flyfrontier.com/accessibility/accessibility-request-form; Customer Service on WhatsApp: 720-902-3969 live chat: https://www.flyfrontier.com/chat-with-us/