https://thelinuxforum.com/forum/general-linux-forums/general-linux-discussions/25182-f-ik-what-is-the-cheapest-day-of-the-week-to-fly-to-france

https://thelinuxforum.com/forum/general-linux-forums/general-linux-discussions/25182-f%D1%8F%CF%83%CF%83-%C6%ADi%E1%84%83k%CF%83%C6%AD-what-is-the-cheapest-day-of-the-week-to-fly-to-france