A Saturday shipping option can be selected during the checkout stage while configuring shipping prices.

For time-critical shipments, UPS offers the convenience of Saturday Delivery which can only be selected with orders shipped by 2nd Day Air or Next Day transit services. Ground and 3-Day services will not arrive on Saturday and should not allow the option. 

USPS offers Saturday delivery as a standard service, but their transit times are not as dependable as UPS. Customers who are in dire need of delivery on or before a Saturday should seriously consider upgraded UPS shipping methods and UPS Saturday delivery. In our experience, USPS (including Priority) just are not reliable enough for dire situations.