In the aftermath of the David Dao dragging incident in April, several airlines revamped their policies around paying denied boarding compensation. In September Delta paid out $4000 in travel credit to a woman flying to South Bend, Indiana for a Georgia Bulldogs – Notre Dame game. She still made it in the night before the game.
On December 19th American Airlines flight AA150 from Chicago O’Hare to Paris went mechanical just prior to boarding. Instead of cancelling or delaying the flight to the next day, they swapped out the planned Boeing 787-9 with 285 seats for a Boeing 787-8 which has just 226 seats.