What is the delivery time for USPS to deliver first class letters from Orlando Florida Tucson Arizona?

USPS First-Class Mail generally takes between 1 to 3 business days to deliver mail including letters within the United States, including from Orlando, Florida to Tucson, Arizona. Delivery times can vary depending on factors such as distance, weather conditions, and mailing volume, but using the First Class Mail service ensures faster delivery compared to other USPS mail services.