I have an American Flag in a wooden case but there is no glass or plastic coving over the flag. Does anybody have any ideas?

You can add it yourself- if triangular in shape, then more than likely is a memorial/burial flag

SGT Shannon Weaver Logan I would look at Hobby Lobby or Michaels for a shadow box with glass.

https://www.hobbylobby.com/Home-Decor-Frames/Frames-Photo-Albums/Shadow-Boxes-Display-Cases/Oak-3-in-1-Flag-Case/p/98318?gclid=EAIaIQobChMIhqOD0tvW5QIVxBd9Ch2hTwY6EAQYASABEgJWuvD_BwE

https://www.michaels.com/studio-decor-commemorative-flag-case/10271935.html?cm_mmc=PLASearch-_-google-_-MICH_Shopping_US_N_AllProducts_N_N_N_N_Test-_-Frames&Kenshoo_ida=&gclid=EAIaIQobChMIhqOD0tvW5QIVxBd9Ch2hTwY6EAQYAyABEgJJz_D_BwE

Local glass and door outfits custom cut glass. For a small shadow box, $10-15 usually covers it.

GET A NEW CASE FOR THE FLAG

SGT Shannon Weaver Logan, to build on what SGM Bill Frazer said, you can go to your local home center (Home Depot, Menards, Lowes), and buy both a small sheet of glass and the tool used to cut it. Both are inexpensive...certainly cheaper than paying a glass shop to do it. There's plenty of how-to videos online that will instruct you how to properly score the glass and break it clean.

I recently had to do something similar when I broke the glass on a decorative art piece, and found it easy to do.

I would take it to a local hardware store and see what they would charge for a piece of glass. That said, it isn't that hard to replace yourself, just takes a little time and effort. (Personally, I would head to a local Ace Hardware rather than the big-box places).