Hopping from island to island is easy either by air or, more popularly, using the network of inter-island ferries. On the islands themselves you can do much of your exploring on foot using taxis, rental cars, bikes or boats for longer distances.
By air
Getting between the islands by air is relatively easy. Between St Thomas and St Croix there are a couple of options: American Eagle and Cape Air fly this route (about US$100-125 round-trip) or there's Seaborne Airlines' seaplanes (several daily; 15min; tel 340/773-6442) - cheaper and more of a thrill. There's no airport on
St John so you need to take a ferry either from Charlotte Amalie (nearest to the airport; US$7 one-way; 40min), or Red Hook (US$3 one-way; 20min). The car ferry (same ports) costs US$40 round-trip.
To get from the USVI to BVI there are scheduled flights from St Thomas to: Tortola (daily with LIAT, CaribAir, Air Sunshine; Mon, Wed & Fri with Clair Aero (tel 284/495-2271); Virgin Gorda (Mon-Sat with Air St Thomas); and Anegada (Mon, Wed & Fri with Clair Aero). From St Croix there are daily flights to Tortola with Air Sunshine. Charter flights to Tortola, Virgin Gorda and Anegada are always available with Fly BVI. Within the BVI, there are regular flights by Fly BVI and Clair Aero.
By bus and car
On the main islands of the USVI there's a government-operated bus service, VITRAN (tel 340/774-5678), which makes designated stops (look for rainbow-coloured buses on signposts). While buses are cheap (generally US$1 per trip and 25¢ per transfer), bus stops aren't always conveniently located and trips, especially in and around Charlotte Amalie, can be a slow process. Apart from the irregular Scato Bus Service on Tortola there is no public transport on the BVI. In most cases you'll find it easier on both the USVI and BVI to get a taxi or, better still, rent a car , which is easily done on most of the major islands. Book your car in advance if you're coming during peak season and expect to pay upwards of US$40-50 per day (weekly rates are lower). Note that in the USVI and BVI cars drive on the left side of the road. On the BVI you'll need a BVI driving licence (US$10) that can be issued by the car rental company. Taxis in the Virgin Islands charge by the destination so it pays to pack in as many people as you can. Rates are set by the government and taxi drivers are required to carry a rate card; ask to see it if you're unsure of the fare and always agree on your price before you set off.
By sea
There is an excellent network of inter-island ferries , though it's advisable to call ahead for times as they often change. As a rough guide to prices, a round-trip fare between Tortola and St. John is US$40; between Tortola and Virgin Gorda US$20. Between St Thomas and St Croix there is a high-speed catamaran (75min; US$60 round-trip).