First-class air travel in American is in decline because American corporations can deduct business class airfare more easily than first class airfare. IIRC, th

First-class air travel in American is in decline because American corporations can deduct business class airfare more easily than first class airfare. IIRC, the only domestic airline in America with first-class is American Airlines. The other legacy carriers have gotten rid of it, premium economy is one of the fastest growing classes of air fare.