In 2002, Tonga had 680 km (423 mi) of roadways, of which 184 km (114 mi) were paved. There are no bridges in Tonga, but three islands in the Vava'u group are connected by two causeways. Tonga has no railways.
Nuku'alofa and Neiafu are the ports of entry for overseas vessels. In 2002, the merchant fleet consisted of 80 ships, some of them foreign owned ships registered as a flag of convenience, with a total of 292,139 GRT. Work on extending the port at Nuku'alofa began in 1985. The Pacific Forum Line and the Warner Pacific Line maintain scheduled service from Australia and New Zealand to Tonga via the Samoas and other islands, and cargo ships visit the group from time to time for shipments of copra. Internal sea connections are maintained by the Polynesia Triangle and by the Shipping Corp. of Polynesia.
In 2001, there were six airports, only one of which had a paved runway. Fua'Amotu International at Tongatapu is Tonga's principal airport. Air Pacific, Air New Zealand, Polynesian Airlines, and Hawaiian Air operate scheduled international flights from Fua'Amotu. The government-owned Friendly Island Airways has scheduled flights between Tongatapu, Ha'apai, 'Eua, Vava'u, and Niuatoputapu. In 2001, 56,800 passengers were carried on scheduled domestic and international airline flights.