Macau to Kunming (travel options)?

I need to get to Kunming from Bangkok (but the direct flight is a bit pricy). I know Bkk-Macau is a good option on AirAsia but I don't know how to get from Macau to Kunming?

What airlines fly from MACAU-KUNMING?
How much does a one-way ticket go for?
Is there an overland option I should consider (ie. sleeper train?)

and finally, entering Macau only requires a Chinese visa and passport right?