There are direct flights to the capital, Contonou, from France and Belgium as well as through other neighboring African countries. A visa is needed to clear through customs, but temporary visas are available on arrival in Benin if acquiring them from your point of departure is a problem.
There are a various options for getting around town - taxis, minibus are the two most common options. Taxis are affordable and efficient, while minibuses are cheaper but are slower and can be crowded. For long distance traveling, a third option is travel by train, which goes to more distant parts of the country. Car hire is an easy, alternative option - but the most expensive.