https://intercom.help/techsolution/en/articles/10956673-what-is-the-cheapest-day-to-fly-on-%F0%9D%92%9C%F0%9D%93%82%F0%9D%91%92%F0%9D%93%87%F0%9D%92%BE%F0%9D%92%B8%F0%9D%92%B6%F0%9D%93%83-%F0%9D%92%9C%F0%9D%92%BE%F0%9D%93%87%F0%9D%93%81%F0%9D%92%BE%F0%9D%93%83%F0%9D%91%92-across-america-beyond