Originally Posted by tbogart
You're so right, channa. My outbound flight was on a Sunday and miles didn't post until Tuesday (9 days later). Which I find quite astonishing, as CO/NW have a very close working relationship.
On * Alliance I never have any 'fears' like this. Miles post within 2-3 days maximum.
It's all in how frequently they batch it over. There have been problems with LH taking a while to post to UA at times. And I've experienced some delays getting AQ miles to post to UA.
As for CO, it seems that DL send batches daily -- those miles post to CO very fast. KL and AZ post quickly as well. But NW has always been weekly, and AS is weekly as well (they used to be bi-weekly a couple years ago).
Given that there's likely no standards for mileage transmissions, and they're probably extracting the data and sending it over with a script of some sort (perhaps even a tape in a FedEx), I think about a week is reasonable across partners.