Formal:
* Je rentre chez moi. (This is the most common and literal translation)
Informal:
* Je vais à la maison. (This is more general and can be used in most situations)
* Je rentre. (This is a shorter, more casual way to say it, but it only works if the person you're talking to knows where you live)
With a specific mode of transportation:
* Je rentre en bus. (I'm going home by bus)
* Je rentre à pied. (I'm going home on foot)
The best way to choose the right phrase depends on your relationship with the person you're speaking to and the situation.