American Airlines is a part of the Oneworld alliance, so they are partners with all Oneworld carriers, including Alaska Airlines, British Airways, Cathay Pacific, Fiji Airways, Finnair, Iberia, Japan Airlines, Malaysia Airlines, Qantas, Qatar Airways, Royal Air Maroc, Royal Jordanian Airlines, and SriLankan Airlines.
They are also partners with Air Tahiti Nui, Cape Air Airlines, China Southern Airlines, Etihad Airways, GOL, Hawaiian Airlines, IndiGo, JetBlue, and Silver Airways.