What day is the cheapest to book American Airlines? The cheapest day to buy American Airline tickets is typically on Tuesdays, Wednesdays, and Saturdays . Air-line often release new fares and sales on Monday evenings, making Tuesday a prime day for finding discounted tickets . What is the cheapest day to book flights on American Airlines? ???????????????????? ???????????? ???????????????????????????? ???????????????????? ???????? ???????????????????????????????? ,???????????????????????????????? ???????????????????????????????????????? ???????????? ???????????????????????????????????? ???????????? ???????????????????????????? ???????? ???????????????????????????? ???????????? ???????????????????????????? .