Theres no international flight to yiwu airport directly. Depending on which airport you enter China, you will have below options.

Shanghai to Yiwu: You can take a bus or train to yiwu it take 4 hours.

Guangzhou to Yiwu: You can take direct flight to yiwu airport.

Beijing to Yiwu: You can take direct flight to yiwu airport.

Hongkong to Yiwu: You can take direct flight to Hangzhou Xiaoshan airport,then take bus to Yiwu.or you can take direct bus from Hongkong to Yiwu.

We also arrange airport pick up service,please email us to for pick up service