UA offered $399 on the 787-9 flight on IAD-LAX right up until the moment of my PP clearing. My return 787-9 LAX-IAD flight, at one point it was as low as $549 but now it is $1,169 with one seat left. Well, given the day and timing, Sunday morning, I should not be surprised. Only four seats left to sell on the seat map, strongly suggesting the flight is going to be looking for volunteers to switch flights.