Oxygen bottles such as BOOST Oxygen are considered Hazardous Materials and are not allowed aboard aircraft.
Samsung Note7 Device FAA Ban
The FAA and the U.S Department of Transportation have issued a ban on all Samsung Galaxy Note7 devices on board all aircraft in the US. You must comply with the FAA/DOT ban.
Here’s what you should keep in mind if traveling and own the banned device: Individuals who own or possess a Samsung Galaxy Note7 device may not transport the device on their person, in a carry-on bag, or in checked baggage on flights to, from, or within the United States. This ban includes all Samsung Galaxy Note7 devices (original and replacement models). More information regarding the Galaxy Note 7 ban
Personal Electric Vehicles
For safety reasons, personal electric vehicles (self-balancing scooters, electric skateboards, drift boards, hover boards and rover boards) are not allowed on any Frontier Flight.
Apple MacBook Pro Laptop Notice
Apple has determined that, in a limited number of older generation 15-inch MacBook Pro units, the battery may overheat and pose a fire safety risk. Affected units were sold primarily between September 2015 and February 2017. Not all such products sold during this period are affected. Product eligibility is determined by the product serial number. Please visit the Apple Support Page for more information. If your Macbook Pro has this defective battery, your laptop will need to be turned off and unplugged during your flight.