There are no trains on Jersey.
Car and bus
The airport is situated at 7 kilometers northwest of St. Helier, Jersey's capital. The airport is easily accessible by rental car. From St. Helier's center you drive west via the A1 or the A2. Subsequently you can take La Route de Beaumont or La Route des Genets to the B36, which runs past the airport's entrance.
There's a bus stop outside the Arrivals Hall. Bus 15 connects the airport with St. Helier via St. Aubin's Village. More information on the website of bus company Connex Transport (Tel. +44(0)1534 877 772).
Car rental Jersey Airport
You can find counters of car rental companies in the Arrivals Hall. Two rental companies are present at Jersey Airport: Hertz and Europcar. Avis has an office just outside the airport. You can also book a rental car in advance by using the service provided by EasyTerra; they compare the rates of several providers in a single quote.
Outside the Arrivals Hall there are taxis which all have a meter. A taxi ride to the capital St. Helier costs about £12.
The short-term parking lot lies outside the Arrivals Hall. You pay £0.60 per half hour. The long-term parking lot is located outside the Departure Hall. Here you pay £0.60 per hour.