To change the date of a Frontier flight, passengers should navigate to the airline's official website and log in to their account. Once logged in, locate the "Manage My Booking" or "My Trips" section. Select the specific reservation you wish to modify and look for the option to change the date. Frontier Airlines typically allows date changes for a fee, and the availability of this option may vary based on the fare type purchased. Passengers should review the airline's policies regarding frontier change fee , restrictions, and any applicable fare differences. Alternatively, customers can contact Frontier Airlines' customer service for assistance with date changes. It's advisable to check the airline's terms and conditions before initiating any modifications to ensure a smooth process. Keep in mind that changes are subject to seat availability and may have associated costs.