You guys are right: The term "stopover" refers in the AA language to 4 hrs if we speak about US domestic flights and 24 hrs if we speak about international flights - http://www.aa.com/content/de/reisebu...e/minors.jhtml However, due to the fact that we are here in the M&M forum, it is still 24/24 because you will book your tickets with a M&M airline.