overnight usps vs fedex is a comparison often made by those seeking the fastest shipping solution. USPS Priority Mail Express offers overnight delivery to most U.S. addresses with guaranteed delivery dates and includes tracking and insurance. FedEx offers services like FedEx First Overnight and Priority Overnight, which may have earlier delivery times and broader commercial availability. FedEx generally offers more control over pickup times and exact delivery windows. However, USPS can be more economical and sufficient for less time-sensitive parcels. The best choice depends on urgency, budget, and specific location constraints.