https://community.ring.com/conversations/welcome-to-the-ring-community/what-is-the-cheapest-day-to-fly-on-bettertipstricks/67e1bf6a6e10775c8ba64775
https://community.ring.com/conversations/welcome-to-the-ring-community/what-is-the-cheapest-day-to-fly-on-bettertipstricks/67e1bf6a6e10775c8ba64775