Join Date: Apr 2005
Location: CMH, sometimes AVP, formerly down the Shore
Programs: UA 1K/3MM, AA EXP/3MM, DL MM, former fan of TWA
Posts: 1,920
Booking these flights with an AA code will net 100% mileage earning in AAdvantage (although I don't know much about the challenge rules). United's program earns mileage based on the operating carrier, while American's program earns mileage based on the code used on the ticket.