AAdvantage Business is American’s free small business rewards program , and if you’re eligible and fly American with any frequency, it’s absolutely worth participating (it essentially lets you earn one bonus Loyalty Point and AAdvantage mile per eligible dollar spent on flights, beyond what you usually earn). At the moment, we’re seeing a generous new member bonus for those who register for an account, making it the ideal time to sign-up, if you haven’t done so already (thanks to AwardWallet for flagging this). Earn 10K bonus miles with AAdvantage Business Maximize value by double dipping two limited time offers Bottom line Through December 31, 2026, the AAdvantage Business program is offering 10,000 AAdvantage bonus miles to anyone who registers for the program with promotion code BNS10K. Bonus miles will post within six to eight weeks following the successful enrollment in the program.…