Fedex Services
Last ship date for a Christmas delivery

Overnight - Dec 22nd
Express Saver/ 3 Day - Dec 20th
2 Day - Dec 21st
Ground Service - Dec 14th
International Service - Dec 15th

US Postal Services
Last ship date for a Christmas delivery

First Class Mail - Dec 17th
Priority Mail - Dec 19th
Express Mail - Dec 23rd
Parcel Mail - Dec 15th
International Mail - Dec 13th (Express)
International Mail - Dec 6th (1st Class & Priority)