Call the airline company to readily confirm the validity of a change of date for the type of ticket you have. Although calling is generally the fastest way to get confirmed information, it's also possible to search about your ticket's validity for date changes online.
Ideally, you should know whether your acquired ticket is eligible for date changes prior to actually paying for it. Most cheap promo tickets don't allow any date change, so you must consider this when choosing which ticket to buy. In such cases, you won't be able to change your flight booking at all.
Provide your name, confirmation number, origin and destination airports, original date stated in your ticket and other significant details verifying your identity to the customer service representative. You may also inquire via email. If you prefer to do everything through your online account in your mileage program's website, enter the appropriate details in an online request form.
Explain your situation and check with the agent for your best options for rescheduling and the applicable fees to incur for the transaction. If you prefer doing it online, check for links where you can get confirmed information about available schedule and the applicable fees for the date change in your ticket. Set the parameters for your preferred flight so you can trim down your choices accordingly. Take note that approval of a particular date change for a plane ticket is subject to availability.
Pick a new flight based on the options given to you. Provide your credit card details for any fee to pay and wait for the confirmation of the date change.
Save or print the acknowledgment receipt for the transaction. This document may also be emailed to you, especially if you furnished the transaction by phone. The customer service representative may also provide you with a new confirmation or acknowledgment number for the transaction.
