"United Economy Fully Refundable" likely refers to a type of fare class or ticket option offered by United Airlines, a major American airline. In the context of airline tickets, there are generally different fare classes with varying rules and conditions.

 United Economy Fully Refundable allows passengers to cancel their reservations and receive a full refund, including taxes and fees, without incurring any penalties. This is in contrast to other non-refundable fare classes, where cancellations may result in penalties or the forfeiture of the ticket value.

Keep in mind that specific terms and conditions can vary depending on the airline and the fare class you choose. Fully refundable tickets usually come at a higher price than non-refundable ones, as they offer more flexibility and peace of mind to travelers who may need to change or cancel their plans.

It's essential to read the fare rules and conditions associated with any ticket you are considering purchasing to understand the exact terms, including the timeframes for cancellations and refunds. Airlines often have different policies for different fare classes, so it's essential to check before making your reservation.