Fedex Services
Last ship date for a Christmas delivery

Overnight - Dec 23nd
Express Saver/ 3 Day - Dec 19th
2 Day - Dec 22nd
Ground Service - Dec 17th
International Service - None

US Postal Services
Last ship date for a Christmas delivery

First Class Mail - Dec 17th
Priority Mail - Dec 18th
Express Mail - Dec 20th
Parcel Mail - Dec 17th
International Mail - None (Express)
International Mail - None (1st Class & Priority)