Earn up to 15,000 Bonus AAdvantage Miles for round-trip travel on American between New York (JFK) and San Francisco. Full details, online registration and booking http://www.aa.com/viewPromotionDetails.do?fN=aad_air-jfk-sfo-offer.xml&_locale=en_US (Registration is required) Until May 31, 14Bonuses as follows: