Originally Posted by
newyorkgeorge
Although I think there are some other considerations. For example a family traveling together where they won't off load a parent. Its probably why sole travelers get the toss (as in the Doctor on UA Express.)
Of course, the new air travel bill will prevent airlines from deboarding people who have boarded when the flight is oversold.
I also remember when it was not possible to change seats online after checking in. I now see this is possible.