The United Travel Bank is a digital account that allows United Airlines customers to deposit funds specifically for future travel purchases. Think of it as a prepaid wallet exclusively for United flights. These funds can be used to pay for tickets or additional charges like seat upgrades, making it a versatile tool for frequent flyers. The concept is straightforward: instead of purchasing flights outright with a credit card or cash, you can allocate money to your United Travel Bank. This balance is then ready to be used whenever you book your next flight with United Airlines.