The following are the 2018 date and time shipping deadlines to observe to get your US domestic packages where they need to go prior to Christmas:

12/4, 12pm – last order in by for USPS APO/FPO/DPO (Zip code 093)

12/8, 12pm – last order in by for UPS SurePost / Fedex Smart Post to arrive by Christmas

12/9, 12pm –  last order in by for USPS APO/FPO/DPO (all other zip codes)

12/14, 12pm – last order in by for UPS/Fedex Ground to arrive by Christmas

12/17, 12pm – last order in by for UPS/FedEx 3 Day Service

12/19, 12pm – last order in by for USPS First Class and Priority Mail to arrive by Christmas

12/19, 3pm – last order in by for UPS/FedEx 2nd Day Air

12/21, 12pm – last order in by for USPS Priority Mail Express to arrive by Christmas

12/21, 3pm – last order in by for UPS/FedEx Next Day Air