https://supportcommunity.milestonesys.com/s/question/0D5bH00000ZFzR6SAL/aawhat-is-the-cheapest-day-to-book-flights-on-american-airlinestravelsupport?language=en_UShttps://supportcommunity.milestonesys.com/s/question/0D5bH00000ZFzR6SAL/aawhat-is-the-cheapest-day-to-book-flights-on-american-airlinestravelsupport?language=en_US