Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from New Delhi to Zhengzhou as you normally would.
Related info for your journey
Useful info, stats and facts about New Delhi to Zhengzhou flights.
New Delhi Indira Gandhi Intl Airport is DEL and Zhengzhou Airport is CGO. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.