Delta Air Lines seems to be on the verge of taking the "basic economy" concept and adapting it for its high-end cabins.

Air Canada (ACDVF) is revising some of the terms of its Basic and Comfort economy fare tickets. These changes align the airline’s fare structure with similar fare offerings by other Canadian carriers ...

American Airlines quietly ended the ability for customers traveling on basic economy tickets to earn miles and status. Basic economy tickets are airlines' most restrictive and already do not allow for ...