Originally Posted by
Jzlerner
Possible to do AUP day before? Got an overnight connection. Would it be possible to go up and get AUP that night, then fly the new cabin next day? Or does it have to be same day as flight?
Somebody much further up this thread posted about being quoted a price for a next day AUP on a connecting flight (they were overnighting at LHR) and heading onto MIA, so it seems like it has been done before. Ask at your original airport check-in and then at LHR if the 1st airport can't offer anything.
Pilot37