Online sales are expected to hit more than $1 billion today.
It is also expected to be the busiest day in FedEx history.
The company expects to move about 17 million shipments around the world.
That's nearly double its daily average volume.
"Online shopping is by far the biggest reason we're seeing so many packages. And also people like to ship their packages if they're traveling for the holidays, they don't want to carry them on a plane," Jennifer Cordeau from FedEx explained.
The National Retail Federation expects nearly 47 percent of holiday shoppers this year to buy gifts online.
That's a 4 percent jump from just a year ago.