First class on domestic US flights goes for a much smaller premium than in years past. My usual domestic route is DEN-SFO and first class is usually twice the

First class on domestic US flights goes for a much smaller premium than in years past. My usual domestic route is DEN-SFO and first class is usually twice the price of economy—or less. Far smaller difference than it used to be. AA was selling first class for less than coach on DEN-IAD last week.