By Plane -- Aerovías DAP, O'Higgins 891 (tel. 61/223340 in Punta Arenas, 61/621051 in Puerto Williams; www.aeroviasdap.cl), runs a handful of flights per week from Punta Arenas, Chile. Contact DAP for information about occasional flights from Ushuaia to Puerto Williams. DAP also has charter flights, and overland flights to Cape Horn from Punta Arenas.
By Boat -- There are possibilities to get here crossing the Beagle Channel from Ushuaia. Ushuaia Boating, Gob. Godoy 190, Ushuaia (tel. 2901/436193; www.ushuaiaboating.com.ar), runs a small, speedy zodiac service to and from Puerto Williams, whenever they have enough people to fill the boat (a minimum of three is needed) -- and whenever weather permits, for $130 (£87) one-way and $240 (£160) round-trip. The passenger and cargo ferry Transbordadora Austral Broom offers cheaper passage to Puerto Williams with a 34-hour journey from Punta Arenas (Av. Bulnes 05075; tel. 61/218100; www.tabsa.cl). During the summer, the ferry leaves Punta Arenas four times a month on Wednesday and returns on Saturday; sleeping arrangements consist of reclining seats ($175/£116 adult one-way) and bunks ($210/£140 adult one-way). Kids receive a 50% discount.
Victory Adventure Expeditions, based out of Puerto Williams at Teniente Munoz 118, no. 70 (tel. 61/621010; www.victory-cruises.com), specializes in sailing journeys around the Beagle Channel and Cape Horn, and as far away as Antarctica. The schooner-style ships are not luxurious, but they are warm and comfortable, and their small size allows for a more intimate, hands-on journey than the Australis cruises. A 7-day trip starts at $3,100 (£2,066) per person. Sea & Ice & Mountains, in Puerto Williams (in the Coiron Guesthouse; tel. 61/621150; www.simltd.com), is a German-run agency with a 6-passenger and 12-passenger yacht that takes visitors on 5- to 12-day journeys around Cape Horn and past the Darwin mountain range; contact the agency for prices. For general travel agency needs, including city tours, airline tickets, and hotel reservations, contact Turismo Akainij, Uspashum 156 (tel. 61/21327; www.turismoakainij.cl).