The card's network partners include two airlines, Delta Air Lines and Lufthansa, which enable members to access the latter's business class, Senator, or even first class lounges at selected airports.

Lufthansa The hierarchy of seat configurations on airplanes is usually no mystery: First class comes first, wherever it exists, followed by business, premium economy and, finally, coach.

Lufthansa is now offering the luxury of business class (almost) at the price of economy (sort of). This week, Europe's largest airline unveiled its new Premium Economy Class. Following the 2012 ...