Originally Posted by
WineCountryUA
If the flight is lightly book and the seat is not blocking additional revenue passengers, then the variable cost of one additional passenger is well below the $500 revenue -- and that fare will add to the bottom line. Now if it was $50 fare, there might be a case for the airline to work a deal, but no frontline employee will be so empowered.
There is an SFO-ORD (or vice versa, can't recall) flight on the PNR that is currently F0. Every other flight (and the Y cabin on that flight) is wide open.