It is possible to travel around Iceland by bus but in order to do so it is advisable to plan in advance.
You can find which buses go where on the Public Transport website.
Regular flights are scheduled from Reykjavík to domestic airports in all parts of the country. In co-operation with local bus companies, most towns in Iceland are connected to a regional airport, giving you easy access from Reykjavík to anywhere.
There are several car rental agencies in Iceland. Cars can be booked through a travel agent or an ariline, at airports or directly after arrival in Iceland. Many types of cars are available, from small family cars to powerful 4-wheel-drive vehicles.