Originally Posted by
rufflesinc
You ignore that fact that the airline now has a freed up seat on a later flight and filled up a seat on an earlier flight..
So what? there is an empty seat. unless there is an oversell situation on the flight that the passenger is booked on, then it doesn't matter
The passenger is not doing the airline a favour by offering to get on an earlier ( or later flight ) - the passenger is doing it because it benefits the passenger