https://www.giantbomb.com/forums/general-discussion-30/best-day-to-book-what-is-the-cheapest-day-to-fly-o-1926940/
https://www.giantbomb.com/forums/general-discussion-30/best-day-to-book-what-is-the-cheapest-day-to-fly-o-1926940/
https://www.giantbomb.com/forums/general-discussion-30/best-day-to-book-what-is-the-cheapest-day-to-fly-o-1926940/