https://central.xero.com/s/question/0D58V00009OPuEpSAL/what-is-the-cheapest-day-to-buy-frontier-tickets
https://central.xero.com/s/question/0D58V00009OPuEpSAL/what-is-the-cheapest-day-to-buy-frontier-tickets
https://central.xero.com/s/question/0D58V00009OPuEpSAL/what-is-the-cheapest-day-to-buy-frontier-tickets