https://www.transfermarkt.com/-usa-1-855-738-4035-what-day-is-cheapest-to-book-american-%F0%9D%94%B8%F0%9D%95%9A%F0%9D%95%A3%F0%9D%95%9D%F0%9D%95%9A%F0%9D%95%9F%F0%9D%95%96%F0%9D%95%A4-low-fare-catalog-/thread/forum/659/thread_id/7152/page/1#anchor_7209
read more..