Originally Posted by
JJeffrey
Yep, this is an aa.com feature that has existed for years. Just pull up your reservation at aa.com and there will be a cancel link at the top. Doesn't matter if you've already checked in and flown a few segments, etc., works the same. This removes you from any remaining flights, cancels your ticket, and as mentioned no one will ever look at the record again.
Will that really work for any hidden-city ticket? (Yes, once; but if you do it weekly, will it continue to work?)