UPS provides Saturday delivery for time-critical shipments. The times they will commit to depend on the service you choose. Here is what they stated as of 2009.
UPS Next Day Air® Early A.M.®: Guaranteed delivery one hour later than the guaranteed weekday delivery time, as early as 9:00 a.m., based on estination UPS Next Day Air®: Guaranteed delivery by 12:00 noon or 1:30 p.m. where weekday shipments are delivered by 10:30 a.m. or 12:00 noon, respectively, based on destination UPS 2nd Day Air®: Guaranteed delivery by end of day for shipments picked up on Thursday, based on destination UPS Worldwide ExpressSM Plus: Delivery based on destination UPS Worldwide ExpressSM: Delivery based on destination
In the United States, UPS will pickup on Saturday in every state except Hawaii if you schedule it with them here - Saturday pickup. If you have a critical need, UPS Express Critical® is available 24/7 – even on holidays. 1-800-714-8779. There is no regular Sunday pickup.