Classic tricks for avoiding jet lag—from vitamin C to decidedly stronger substances—rarely work as planned. But there’s new hope for time-zone-traversing travelers, as commercial airlines roll out new cabins to help you deplane rested and refueled. Qatar Airways (qatar.com) claims that its new A350 XWB aircraft diminishes jet lag with a host of technological advances, including pressurization that mimics lower elevations and LED lights that help adjust passengers’ sleep–wake cycles. Emirates (emirates.com) is betting on comfort to beat the lag with its new business-class seats, which will debut this November with features like personal minibars, 23-inch TVs, and lie-flat leather seats. (Emirates will also reportedly launch fully enclosed first-class suites next year.) In May, Virgin Australia (virginaustralia.com) redesigned its international business class to offer private suites with 80-inch lie-flat seats and turndown service. Still can’t sleep? Seek out an old, if not entirely reliable, remedy at the new business-class cabin’s bar and lounge.