The distinctive three-engine configuration of the Dassault Falcon 900LX (201.440.6700, www.dassaultfalcon.com) allows the $42 million jet to fly slower on approach and thus land at small airports that often are more convenient for travelers. These include London City Airport, an especially challenging field for jets that is only 7 miles from central London. (Southend, the other London airport that primarily serves general-aviation flights, is 40 miles from downtown.) The 900LX also is known for its efficiency. Compared to other jets in its class, it consumes about 40 percent less fuel. It has a range of 5,500 miles and a cruise speed of 555 mph. The 33-foot-long stand-up cabin includes a galley, workspace, and stateroom in addition to a seating area that accommodates as many as 19 passengers.