Delta Claims it is America's 'First Class Airline'

United is calling itself America's Flag Carrier, so Delta created its own pithy slogan.

Dear readers,

This must be the year U.S. network carriers introduce punchy statements to poke at a competitor's weakness. On Tuesday, Scott Kirby trotted out his favorite new catchphrase, calling United "the flag carrier of the United States,” because it has more success with long-haul routes than Delta or American. On Wednesday, during an investor day, …