USPS offers several mailing options. A mail that is sent (from Dayton, OH to Columbus, OH) using their Priority Mail service takes two days to be delivered. With Priority Mail Express, it will just take 1 business day to arrive.
Priority Mail ships in 1, 2, or 3 business days based on where your package starts and where it’s being sent. A variety of Flat Rate options eliminate the need to weigh items up to 70 lbs.
Priority Mail Express is their fastest domestic service for time-sensitive letters, documents, or merchandise. Guaranteed overnight scheduled delivery to most locations, including PO Boxes.
Scheduled delivery date depends on origin, destination, and drop-off time. Some restrictions apply. For additional information, visit their Price Calculator page.