Although I have Celiac disease and my food has to be gluten free, I still do some baking with regular flour.
When filling the canister with flour, I sift it into the container. It's ready for accurate measure when needed.
You may notice my canister is an oldie, probably from the 70s. It matched the color of the refrigerator at the time. My sifter was a wedding gift to us 57 years ago and still good as new. I'm proud to say that I'm married to the same man. A saying back then was "The way to a man's heart is through his stomach". I believe there is a lot of truth in that.
This is a page about sifting flour without a sifter. Some recipes call for sifting the flour, but you don't own a sifter. There are other ways to sift flour using things you may already own.