https://central.xero.com/s/question/0D58V00009OwWf7SAF/what-is-the-cheapest-day-of-week-to-book-united-flight-cheapflight
https://central.xero.com/s/question/0D58V00009OwWf7SAF/what-is-the-cheapest-day-of-week-to-book-united-flight-cheapflight
https://central.xero.com/s/question/0D58V00009OwWf7SAF/what-is-the-cheapest-day-of-week-to-book-united-flight-cheapflight