https://support.google.com/phoneapp/thread/333908414?hl=en&sjid=18313932497111376370-NC https://support.google.com/phoneapp/thread/333908696?hl=en&sjid=18313932497111376370-NC https://support.google.com/phoneapp/thread/333909958?hl=en&sjid=18313932497111376370-NC https://www.goodreads.com/quotes/12677237-what-is-the-cheapest-day-to-buy-frontier-tickets-cheapest https://www.goodreads.com/quotes/12677238-what-is-the-cheapest-day-to-buy-frontier-tickets-cheapest https://www.goodreads.com/quotes/12677240-24-7-support-what-is-the-cheapest-day-to-buy-frontier-tickets-cheapest https://www.goodreads.com/quotes/12677241-know-exactly-what-is-the-cheapest-day-to-buy-frontier-tickets-cheapest