Fish Fries in the St. Louis Metro Area. The St. Louis metro area has many churches, Knights of Columbus, Elks Lodges, VFW and American Legion Posts that hold fish fries on every Friday during Lent. Dates: Fridays, March 7th - April 18th. See the website link for a map for a fish fry near you. Please check each location's website to confirm the exact dates and times of when their fish fries occur.