You can go to Bengo province by:
Caxito city has an airfield for small planes.
Ambriz and Barra do Dande municipalities have each one a port.
There are two national main roads such as Luanda-Zaire-Border and Luanda-Uige-Border. Both of them cross Bengo capital, Caxito. Besides, there are other pavement roads and connections to other provinces of the country.