You are allowed to travel by air with Flyability drones, but it is very important that you keep the following points in mind:
The latest IATA regulations active from January 2021 specify that each passenger is allowed to carry up to 20 batteries in carry-on baggage if the capacity of each battery is below 100Wh:
"Batteries, spare/loose, including lithium metal or lithium ion cells or batteries, for portable electronic devices must be carried in carry-on baggage only. For lithium metal batteries the lithium metal content must not exceed 2 g and for lithium ion batteries the Watt-hour rating must not exceed 100 Wh. Articles which have the primary purpose as a power source, e.g. power banks are considered as spare batteries. These batteries must be individually protected to prevent short circuits. Each person is limited to a maximum of 20 spare batteries.
*The operator may approve the carriage of more than 20 batteries."
All Flyability drones and products have batteries which are below the 100Wh limit, this is indicated on the label of the battery, and is stated in the user manual of the drones.
It is recommended to print out the IATA regulations sheet and bring it along on your travels, as not all security personnel may be aware of the latest regulations, but remember that the airline company may always impose stricter regulations on what is allowed on board. In case of doubt, it is best to contact them beforehand.