IMPORTANT NOTE: All sites labeled with an asterisk (*) offer free shipping worldwide. Otherwise, all sites offer free shipping in the U.S. only. Sorry!
1. Amazon Prime
2. Nordstrom
3. Target
4. Kate Spade & Jack Spade
6. Dermstore
8. Zappos
10. Look Fantastic*
11. Wayfair
12. Madewell
13. Reformation*
14. Barneys and Barneys Warehouse
15. BaubleBar
16. Billabong
17. Neiman Marcus
18. Journelle
19. Crate & Barrel
20. Le Tote
21. Animi Causa*
22. Front Row Shop*
23. L.L.Bean
24. MAC Cosmetics
25. Ray-Ban
26. Cents of Style
27. FY
28. SkyMall
29. Oasap*
30. Fossil
31. Casetify*
32. Bonobos
Now all that's left to do is wait for those magical packages.
CORRECTION
Torrid was previously included in this list but offers free shipping to only stores, not homes. All the stores on this list currently offer free shipping to residences.