Originally Posted by
guv1976
The MIA-LAX flight should indeed be free of the dreaded surcharges. But LAX-LHR? I doubt it.
And MIA-LAX-LHR should cost a lot more than 20,000 Avios. LAX-LHR alone should cost 25,000 Avios in Y.
Typo in the OP? MIA-LAX-DEN, perhaps?
The OP is redeeming AAdvantage miles not Avios