Originally Posted by
mikelat
Typically there is no charge/fee for an upfare.
I regret to say you appear to be incorrect on this point.
https://www.aa.com/i18n/AAdvantage/r...servations.jsp says
Changes to origin/destination
A $150 USD charge or additional miles will apply for a change to an eligible origin or destination on a MileSAAver or AAnytime award, (waived for AAdvantage Executive Platinum members using miles from their account).
Changes that require different award type -
Changes to the itinerary which involve different AAdvantage award(s) than originally ticketed require a reinstatement of the original award ticket, payment of the applicable award reinstatement charge (see below), and a new award ticket issued (waived for AAdvantage Executive Platinum members using miles from their account).