With holiday shopping in full swing, you may be thinking about shipping gifts to loved ones who live in another state.

Companies such as UPS and FedEx, as well as the United States Postal Service, all have deadlines for sending packages to ensure they make it to their destinations before Christmas.

Here's a complete list of deadlines:

USPS Domestic Shipping

USPS Retail Ground - December 14
First Class Mail - December 20
Priority Mail - December 20
Priority Mail Express - December 22

FedEx U.S. to U.S.

FedEx SmartPost - December 10
FedEx Home Delivery - December 17
FedEx Ground - December 17
FedEx Express Saver - December 19
FedEx 2Day - December 20
FedEx 2Day A.M. - December 20
FedEx Standard Overnight - December 21
FedEx Priority Overnight - December 21
FedEx First Overnight - December 21
FedEx SameDay - December 25
FedEx SameDay City Priority - December 25
FedEx SameDay City Direct - December 25

UPS

UPS 2nd Day Air - December 20
UPS Next Day Air - December 21