LBI is reached by car via the Route 72 causeway from the mainland. From the north (New York, North Jersey), take the Garden State Parkway south to Exit 63, then Route 72 east. From Philadelphia, take the Atlantic City Expressway to the Garden State Parkway north, then Exit 63.
The nearest major airports are Philadelphia (PHL) and Newark (EWR), both about a hundred minutes' drive. Atlantic City Airport is closer but serves fewer routes. There is no public transit to the island itself — you need a car or a pre-arranged car service.