How long will wheat flour go bad?

See if it's sealed. If it is sealed, it won't be a problem for a year. If it is moth-proof, moisture-proof and mildew-proof, it can be eaten. Vacuum packaging should be fine. If there is an opening, it depends on the storage environment. Without the external factors I mentioned before, it will not be a problem for about half a year. I hope I can help you ~