How late can you cancel on Expedia?

The cancellation window on Expedia depends on the type of booking. For most flights, you can cancel within 24 hours of booking without penalty, as long as it’s more than 7 days before departure. Hotel and car rental cancellations vary, with policies ranging from free cancellation to fees.

Source: https://bcpportal.bcpcouncil.gov.uk/forums/general-discussion/77e2dc65-dd9d-ef11-95f5-6045bd11e914