24-Hour Cancellation Policy: You can cancel your flight for a full refund within 24 hours of booking, as long as the flight is at least seven days before departure. This applies to most fares except Basic Economy. Basic Economy tickets are generally non-refundable, but you can cancel within 24 hours of booking for a full refund if the flight is at least a week away. Cancellations After 24 Hours: Beyond the 24-hour window, cancellation fees will vary depending on your fare type. You can find the specific fees for your ticket on United Airlines website [invalid URL removed]. General Refund Information: If you cancel your flight online through My Trips within the permitted window, you can expect a refund to your original form of payment within 7 business days (except for international locations which may take longer). Alternatively, you can request an electronic travel certificate instead of a refund.