what is the cheapest way to get from kunming airport to Jin Jiang Hotel on Beijing Road? thanks!

The cheapest way should be MTR and bus. You can take subway line 6 at the airport to Eastern Bus Station MTR Station, where you can easily transfer to bus no. C73. It can take you to the local Railway Station, which is within walking distance from your hotel.

Though, the best and most convenient way should be the Express Bus Line 2, which can take you from tyhe airport to your hotel directly and the bus fare is CNY25 per person.