overnight delivery cutoff time saturday varies depending on the carrier and location. UPS and FedEx typically have earlier Saturday cutoff times, often around 1–3 p.m., for packages to qualify for Monday delivery. USPS also offers overnight options via Priority Mail Express, with acceptance times depending on the post office. Missing the cutoff could delay delivery until the next available service window. It’s important to confirm with local branches or use online scheduling tools to meet urgent deadlines.