Nantong, Haikou Meilan Intl, and Shenzhen are the top three Donghai Airlines airports based on our airline data. This may change if Donghai Airlines makes updates to their flight routes due to supply and demand.
A flight from Shenzhen to Beijing Daxing Intl, which has 0 stops, is S$ 244 which is the least expensive round-trip domestic flight that Donghai Airlines offers. For a one-way domestic Donghai Airlines flight, the cheapest route is Shenzhen to Xi'an Xianyang (0 stops) for S$ 58.
Donghai Airlines does not have flights from Singapore Changi at the moment. There are scheduled flights with Donghai Airlines out of Sanya Phoenix Intl though (if you don’t mind flying from this airport). Flying with Sichuan Airlines is recommended if you still want to fly from Singapore Changi.