Originally Posted by
3Cforme
Are these fare changes - as in a change in price for the same fare rule/or a new fare filed - or are they reflecting fare bucket availability? The former is limited to x times per day by the GDS. Maybe six? Fare bucket availability changes in real time. Somebody buys the last seat on any segment that your search had used and you're pushed into a more costly fare.
Even less significant is a comparison across sites in different currencies. That's not a price change at all.
I wouldn't normally factor in currency conversion, but you have multiple prices across multiple versions of AA's sites and third party sites. I understand price changes when fare bucket availability dries up, but this is not that.