https://www.transfermarkt.com/-what-days-are-american-airlines-cheapest-to-fly-/thread/forum/696/thread_id/30285/page/1#anchor_30802
https://www.transfermarkt.com/-what-days-are-american-airlines-cheapest-to-fly-/thread/forum/696/thread_id/30285/page/1#anchor_30802