Https://www.transfermarkt.com/what-day-is-the-cheapest-to-book-american-airlines-30-discount/thread/forum/696/thread_id/16745/page/1#anchor_17158 https://www.transfermarkt.com/what-day-is-the-cheapest-to-book-american-airlines-30-discount/thread/forum/696/thread_id/16745/page/1#anchor_17158 https://www.transfermarkt.com/what-day-is-the-cheapest-to-book-american-airlines-30-discount/... https://www.transfermarkt.com/what-day-is-the-cheapest-to-book-american-airlines-30-discount/thread/forum/696/thread_id/16745/page/1#anchor_17158