There is no flight from Kunming to Weifang, and the nearest route is to take flight from Kunming to Qingdao and then take coach to Weifang from Qingdao, which will take you one hour and a half. From Kunming to Qingdao, several flights are available daily and below is the flight schedule provided by China Eastern Airlines: Kunming- Qingdao MU5773 0800/1100

From Dhaka to Kunming, one direct flight is available daily: Dhaka – Kunming, MU2036, 1440/1805, China Eastern Airlines. However, since your departure time is half a year later, I can not find the airfare. Thus, it is better for you to consult the airlines or booking agencies for the price details.