https://intercom.help/gfgf-3b6340b8bceb/en/articles/10780496-como-puedo-cambiar-la-fecha-de-mi-vuelo-en-frontier-airlines
https://intercom.help/gfgf-3b6340b8bceb/en/articles/10780494-como-puedo-cambiar-la-fecha-de-vuelo-en-frontier
https://patch.com/california/unioncity/calendar/event/20250315/2ec37d71-6e50-42ab-b060-197a90e9ebc8/questions-does-expedia-have-a-grace-period
https://intercom.help/travel-baf8abe1ff66/en/articles/10780723-refund-options-how-close-can-you-cancel-a-cruise