Describe distance & Conveyance to reach fr Kunming Rail Station to KMG Int Air Port China please

Mr Tim did not reply the distance between KMG Rail St to Kunming Int Air Port, conveyance to reach from Railway St to Kunming Int Air Port. Trains are available from Kunming Rail Station to Nanning Rail St as told by him, But the problem arises at the time when facility of conveyance is searched : whether Govt operated or Private vehicles r available fr Kunming Rail to Int Airport up-down. and so Between Guangxi Med Uni to Nanning Rail Station.
Mostly the foreigners r charged higher fares by the local operators, we r students and want to reduce expenses of travel.