Https://patch.com/california/los-angeles/calendar/event/20250212/cabf6995-53b5-4004-89dc-4ef929b68e6c/frontier-airlines-what-day-is-the-cheapest-to-book-frontier-airlines https://patch.com/california/los-angeles/calendar/event/20250212/cabf6995-53b5-4004-89dc-4ef929b68e6c/frontier-airlines-what-day-is-the-cheapest-to-book-frontier-airlines