how can i get a bus to keqiao from Shanghai pudong air port my flight landing 12.45 on 10th of october?

From Pudong airport, there is no direct bus to reach Keiqiao.
From the airport, you can take the airport shuttle bus line 7 to reach South Railway Station. Then you can walk to reach the south bus station, where you can find frequent buses to reach Keqiao. There are only four buses everyday at 08:20, 08:25, 11:05 and 13:05.