Why Southwest Airlines’ Boeing 737 Fleet Makes Premium Cabins Almost Impossible To Profit From

Southwest Airlines has spent much of the last two years trying to convince investors that it can evolve beyond the low-cost formula that made it successful for decades. Assigned seating, extra-legroom rows, and discussions about lounges and premium products all suggest an airline searching for higher-margin revenue streams at a moment when the broader US airline industry is becoming increasingly dependent on premium travelers.