how much does it cost to overnight a letter usps

how much does it cost to overnight a letter usps How much it costs to overnight a letter USPS depends on the size, weight, and destination of the letter. USPS offers Priority Mail Express, which guarantees overnight delivery to most U.S. locations. The cost for this service starts at around $26.35 for a standard envelope, and prices increase based on the weight and distance. Priority Mail Express includes tracking and insurance for up to $100, making it an ideal choice for urgent and important correspondence.