Jinjiang has an airport, while Quanzhou does not. However, it is a fairly minor airport; there are flights to Hong Kong and some mainland cities, but no international flights and not a large choice of domestic flights. The usual way to fly into the region would be via Xiamen or Fuzhou.
To reach Jinjiang by train, or by bus from Fuzhou, go to Quanzhou and grab a taxi. Some city busses also go from Quanzhou to Jinjiang; 801 and 802 are two of the numbers. To get there by bus from Xiamen, take a Quanzhou bus and get off when it passes through Jinjiang.
