Savvy passengers can boost their economy class experience by booking the more underrated seats.

What the major airlines have to offer in premium economy.

MUNICH − Lufthansa’s new cabin concept, which the airline branded Allegris, is flying to the U.S. now, with destinations from Munich including Chicago, Newark/New York, San Diego and San Francisco.

Flying doesn’t have to be a hassle, but for many travelers, it often is. Economy keeps costs down, but comfort and convenience take a hit. First class promises smoother service and more space, but it ...