GUANGZHOU -- Demand for air travel within China has picked up, but airlines have had to engage in a costly battle for customers by offering all-you-can-fly tickets.
10 airlines offer unlimited flight passes to fill seats
Sichuan Airlines flight attendants serve passengers on a domestic flight. © Reuters
GUANGZHOU -- Demand for air travel within China has picked up, but airlines have had to engage in a costly battle for customers by offering all-you-can-fly tickets.