Juneyao Airlines launched a daily Beihai-Xiamen-Shanghai Pudong service on 1 April.
It is using Airbus A320 aircraft on the route, says the carrier.
Innovata schedules show that Juneyao is the only operator on the Beihai-Xiamen route. On the Xiamen-Shanghai Pudong route, it competes with Spring Airlines, China Eastern Airlines and its subsidiary Shanghai Airlines.
Beihai is located in the southern Guangxi autonomous region.