If you want Santa Claus to arrive on time with holiday packages to military, international or U.S. destinations, the U.S. Postal Service has announced the dates those packages must be in the mail. So has FedEx and UPS.

Here's what you need to know to get your packages to their destinations on time.

Post Office Locations

In the Ladue and Frontenac area, Ladue Pharmacy doubles as a full service post office. 

Other nearby Post Offices in the Creve Coeur and Olivette area are: U.S. Post Offices at 331 N. New Ballas Road, and at 9621 Olive Boulevard.

Postal Service Shipping Deadlines

Military Shipping Deadlines*

Parcel Post service to all APO/FPO/DPO addresses was Nov. 13. Priority and First Class Mail must be sent by Dec. 3 to APO/FPO/DPO AE ZIP 093, and Dec. 10 to all other military addresses. 

*The deadline for Dec. 25 delivery to Africa and Central and South America is Dec. 3. For more details on military and international mailing, visit the USPS website.

FedEx Deadlines

The deadline for FedEx Ground delivery by Christmas is Dec. 17. FedEx overnight services sent by Dec. 22 will get you there on time. And FedEx Same Day service will be operating on Christmas Day. Here are the nearest FedEx Centers in the area:

• FedEx Office Print & Ship Center, 12520 Olive Blvd.
• FedEx Office Print & Ship Center, 12520 Olive Blvd., Suite C
• FedEx Office Print & Ship Center, 11623 Olive Blvd.
• FedEx Office, 9200 Olive Blvd.

UPS Deadlines

The UPS schedule notes that packages can be sent by air, international and ground by Dec. 20. UPS Next Day Air packages picked up on that day will arrive Friday, Dec. 21. UPS 2nd Day Air packages picked up that day will arrive on Dec. 24. Here's the nearest UPS locations:

• The UPS Store, 11469 Olive Blvd.
• The UPS Store, 9648 Olive Blvd.