Moderator: American AAdvantage
Join Date: May 2000
Location: NorCal - SMF area
Programs: AA LT Plat; HH LT Diamond, Maître-plongeur des Muccis
Posts: 62,948
Dave Noble is correct.
It's the flight number that's meaningful.
aA 48 was billed as SFO-DFW-ZRH, and though we inevitably changed terminals, gates and aircraft, we earned as if flying nonstop SFO-ZRH. This was true for DFW-ORD-LHR flights with the same number - but an MD-80'on the short leg and a Boeing 777-200 on the long.
Where this doesn't hold true is when a return flight holds the same flight number as the outbound; mileage runners etc. will get full credit (unless the flight has stops en roué - that will once again count as a non-stop for earning miles and points).