There is no direct flight from Singapore to Jining. However, you can take one connecting flight with transfer at Guagnzhou as the direct flights from Singapore to Guangzhou are available daily. And the direct flight from Guangzhou to Jining is in operation on each Monday, Wednesday and Friday. Or, you can take a flight from Guangzhou to Jinan first and then take a train or coach to Jining. Besides, you can book a domestic flight online first. But, you are still suggested to book an international flight first in case any changes accrued.