Qantaslink now operates a regular air service by Dash-8 twin-turboprop aircraft from Sydney and Brisbane, the trip takes about two hours. If you are travelling to Lord Howe, you will sometimes find the airfare bundled in a discount accommodation/travel package: this will probably prove cheaper than you could otherwise arrange. Before booking a separate airfare, be sure to check my tip in the ‘warnings’ section!
Lord Howe has only one road, which runs for about 8km of its length before fading away near Mt Lidgbird to the south. There is an absolute 25km/hr speed limit and only a handful of vehicles. As a tourist, you have a choice of walking or hiring a bicycle, which is the normal form of transport: in this lovely setting, either is delightful. Many of the accommodation houses include bicycle hire with accommodation.