PRNewswire -- United customers may now relax more easily, as the final Boeing 767 (B767) in its international fleet has been upgraded with fully lie-flat beds in United First(R) and United Business(R). Customers traveling on an international United flight on a B767 are now ensured they will enjoy the comfort and relaxation of United's new International Premium Travel Experience. A timelapse video of another aircraft - a United Boeing 747 - being reconfigured is available at www.youtube.com/uniteditstimetofly.