How long will it take for mail to travel from Utah to Missouri?|162754

A letter was mailed to me Friday, (4/11). It is coming from Salt Lake City, Utah to Saint Louis, Missouri. About how long should I expect it to take, and when should it be here? Also, is there anywhere on the USPS website for this?

I_d say about 4 days on average. I live in Montana and mail to Kentucky to my family, and that_s usually how long snail mail will take.