China Southern Airlines does provide Wi-Fi services on select flights, primarily on their long-haul international routes. The availability of Wi-Fi may vary depending on the aircraft type and the specific flight. Passengers can typically access various Wi-Fi packages, which may include complimentary options for certain classes of service or for loyalty program members, while others may require a fee payment. It is advisable for passengers to check the specific flight details prior to traveling to determine if Wi-Fi will be available and to explore any associated costs or packages. For the most current information regarding Wi-Fi availability on particular flights, passengers may visit the official China Southern Airlines website, where they can find detailed services offered for their chosen routes.