UPS red shipping – that is, UPS shipping that uses a red Air Shipping Document – is UPS Next Day Air or UPS Worldwide Express. The Air Shipping Document is a form that includes the address label, tracking label and shipping record.
UPS Next Day Air guarantees overnight delivery to all 50 states and Puerto Rico, with some limitations for deliveries to Alaska and Hawaii.
UPS Worldwide Express provides service to 60 different countries. It delivers documents by the next business day to Canada and Mexico. Packages sent via UPS Worldwide Express are delivered by the second business day to destinations in Europe and Latin America and within 2 to 3 days to destinations in Asia.