Is it legal?
Cost shared flights operated by private individuals fall under European Regulation (EU) No 379/2014 of 7th April 2014, amending Commission Regulation (EU) No 965/2012.Flights can be legally cost-shared by private individuals on non-complex aeroplanes and helicopters, in accordance with the rules of Part NCO, on the condition that the direct costs are shared by all occupants of the aircraft, pilot included, and the number of people sharing the direct cost is limited to 6.
Only direct costs can be shared and the pilot cannot make any profit on the flight. We have written confirmation from the European and national authorities that state the above. The UK CAA has also confirmed the legality under order 1188 General Exception E4277 allows cost-sharing in the same way EASA does. This legislation replaced the Air Navigation Order 2016 which stated that advertising a cost-shared flight was not possible.
You can see a sum-up about the legality of flight sharing in Europe and especially the UK
See the full CAA guidelines
Wingly Pro flights are operated by partner commercial aviation organisations. These flights differ from cost-shared flights by private individuals as the flights are made for profit under commercial regulations designated by the national authorities. These flights are conducted by Air transport operators that hold an Air Operators Certificate and possibly an Air Transport Licence, or an Approved Training Organisation or Designated Training Organisation.