When flying from Qatar to Nanjing, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Nanjing Lukou Intl (NKG) is the airport you will fly into if you book a flight from Qatar to Nanjing. It is only a 36.4 km journey from Lukou Intl (NKG) to Nanjing’s city centre.
This is defined as Doha Hamad Intl Airport (DOH) and Nanjing Lukou Intl Airport (NKG). Codes like Nanjing Lukou Intl Airport are often used to just call airports uniquely.