I'm sorry what do you mean "they" did not charge you the $575?

Was the airline paid by the CC company.
Maybe the airline lost the charge in and an audit-by the airline-- discovered and corrected it.


anyway the don't have 60 days to bill you for any valid authorized charges,
You took the trip and bought the ticket.

Now if there is a problem with MBNA refusing to allow you to dispute a unvalid charge deferred for 9 months because it is more than 60 day even though the just billed you for it. You would have argument ( and be right) that the sixty day clock starts from when you are billed.

I don't see any validity to your complaint.
Sorry.
While it would have been nice to get a "missed" charge and a "freebie", They have not waived their right to bill you the amount.

I think at perhaps the three year mark, you could say, but still likely not prevail, that its unfair to try to collect but no way within ONE YEAR!