United Airlines' cancellation policies can vary depending on factors such as the type of ticket purchased, fare class, and the time frame in which the cancellation is made. Generally, United offers flexibility through fare options like Basic Economy, which may have more restrictive cancellation terms, and standard Economy, which often allows changes and cancellations for a fee. For example, if you've purchased a non-refundable ticket, you may be able to cancel your reservation and receive a credit for future travel, minus any applicable fees. However, refundable tickets typically offer more lenient cancellation terms, allowing you to receive a full refund if you cancel within the specified time frame. United Airlines advises passengers to review the fare rules and terms and conditions associated with their ticket at the time of booking to understand the cancellation policies applicable to their reservation.