Expedia's cancellation policy depends on the type of booking and the specific terms set by the hotel, airline, or car rental provider. For hotels, cancellations are typically allowed without penalty up to a certain time before check-in, often 24 to 48 hours in advance. However, if the booking is non-refundable or made under special promotional rates, cancellations may not be possible or could result in a full charge. For flights, cancellations or changes to bookings are generally governed by the airline’s policies, which may allow changes or cancellations for a fee. It is important for travelers to review the terms and conditions at the time of booking to understand the applicable cancellation rules. Refunds are typically processed once the cancellation is confirmed, but the timing may vary depending on the provider.