Yes, you can freeze bread!
After all the effort I put into baking a fresh loaf of sourdough, I want it to last as long as possible. The primary way I store my bread is on the counter top, in my glass mixing bowl, with a lid. Airtight is the main thing we want when storing bread.
When I want to store the bread for longer (or when I have a bunch of extra boules from my workshop) I like to stick my bread in the freezer, either sliced or whole.
Sealing plastic bag works best for freezing.
When storing whole loaves in the freezer, you have to allow the bread to defrost before slicing. You can take the bread out of the freezer and store in the refrigerator over night for early morning consumption or leave on your countertop for a few hours until it is soft enough to slice. Alternatively, you can heat your oven to 350 deg F, remove the loaf from the plastic and wrap in aluminum foil. Rebake the loaf for about 20 minutes and it’s like a freshly baked batch.
Stick frozen slices directly in the toaster.
For maximum freshness, slice your loaf once cooled after baking, double bag the slices and stick in the freezer. You can then skip the defrosting step and pop the frozen slices in the toaster. Bread stores to up to 3 months in the freezer, sliced or whole.
