MILWAUKEE (CBS58) -- Christmas is less than two weeks away. If you are still checking off your shopping list and need to mail your gifts, the deadlines are coming up quick.

U.S. Postal Service

• December 14: USPS Retail Ground
• December 19: First-Class Mail
• December 20: Priority Mail
• December 22: Priority Mail Express

FedEx

• Dec. 15: Standard Ground Service
• Dec. 19: Express Saver
• Dec. 20: Two-day
• Dec. 21: Overnight shipping deadline

UPS

• Dec. 18: UPS 3 Day Select
• Dec. 20: 2nd Day Air
• Dec. 21: Next Day Air

Also, about 600 stores are offering Free Shipping Day on December 15th.