The ski lift-like system began soaring over the River Thames on Thursday, offering a bird's-eye view of the London landscape and catering to the tourists expected for the Olympics.
The cable car makes the half-mile (1 kilometer) crossing between Greenwich and the Royal Docks, a few miles (kilometers) downstream from city-center landmarks such as Parliament and the London Eye Ferris wheel.
The ride will give visitors views of Olympic Park, the Canary Wharf financial center and the Thames Barrier, massive structures in the river that keep London from flooding.
It is called the Emirates Air Line, after the air carrier invested 36 million pounds ($56 million) as part of a 10-year sponsorship deal.
Adult fares for a one-way crossing range from 3.20 pounds to 4.30 pounds ($5 to $6.66).
The Olympic Games take place July 27-Aug. 12.