Yes, you can cancel United flights and get a refund depending on the type of ticket, timing, and reason for cancellation. United Airlines offers a 24-hour flexible booking policy that allows all passengers to cancel within 24 hours of purchase for a full refund if the booking was made at least seven days before departure. Refundable tickets can be canceled at any time before departure for a full refund to the original payment method. Non-refundable tickets are not eligible for cash refunds after the 24-hour window but usually qualify for a flight credit that can be applied to a future trip. Basic economy tickets are the most restrictive and are only eligible for a refund if canceled within 24 hours of booking. If United cancels your flight or makes a significant schedule change or delay, you are entitled to a full refund even on non-refundable fares. Award tickets booked with miles can generally be canceled for redeposit of miles with no fee if canceled before departure. Refund requests can be made online through the United website or app, by calling the official United customer service number at 1-877-827-8493 , or at the airport service desk. Refunds to credit cards are processed within seven business days and within twenty calendar days for other forms of payment. Always check fare conditions at the time of booking and cancel as early as possible to maximize refund eligibility.