If you want your packages from Amazon Prime delivered by Christmas, you have to order them today

Matthias Schrader/AP Images

If you are planning on getting your last-minute holiday shopping done with the wonders of Amazon Prime's free two-day shipping, you better hurry up. Today (Tuesday, December 22nd), is your last day to put in an order that is guaranteed to get there by Christmas.

If you aren't a Prime member, but want to get Amazon gifts by Christmas, you can always sign up for Prime's free 30-day trial period. This will give you access to free two-day shipping as well as other perks like access Amazon's growing roster of video content. Just make sure to cancel if you don't want to go for the year membership.

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If you miss today's Prime shipping deadline, you can still get packages from Amazon by Christmas, you'll just have to pay a premium for expedited shipping.

Amazon has been dominating this holiday season. According to a Reuters/Ipsos poll, more than half of Americans surveyed said they plan to do "most" of their holiday shopping at Amazon.

Here is a look at its competitors in this category:

Statista

Disclosure: Jeff Bezos is an investor in Business Insider through hispersonal investment company Bezos Expeditions.