https://www.devex.com/people/what-is-the-cheapest-day-of-the-week-to-fly-on-southwest-airlines-2451900
https://www.devex.com/people/what-is-the-cheapest-day-of-the-week-to-fly-on-southwest-airlines-2451900
https://www.devex.com/people/what-is-the-cheapest-day-of-the-week-to-fly-on-southwest-airlines-2451900