United Airlines flight credit is a voucher provided to passengers who need to cancel or change a flight, allowing them to apply the value of the canceled ticket toward future travel. The credit is usually issued in the form of an electronic travel certificate, which can be used for booking new flights with United. Flight credits typically have an expiration date, often within 12-24 mo... https://eexpedia-air-flights-tickets.us/how-to-use-united-airlines-travel-credits/