A great destination can carry a trip, but on a 12 to 18-hour long-haul flight, the airline can shape the whole experience before you even land. A calm cabin, decent sleep, friendly service, and food you actually want to eat can make the difference between arriving excited and arriving completely wiped out. That matters even more for Americans heading to Asia, whether the plan is a vacation in Japan, a scouting trip in Vietnam, a retirement move to Thailand, or a longer reloca