Originally Posted by GUWonder

Domestic flight, then ID that is not expired by more than one year is rather frequently accepted by the TSA without any issue beside the normal ones for non-expired ID. I wouldn't expect anything worse than not being allowed to use PreCheck and perhaps having a standard kind of screening that TSA haraSSSSment subjects get at US airports.

You should be fine, unless in the unlikely event that some airline rep makes a fuss about it -- highly unlikely since they usually don't check that closely.

I've flown on ID that was expired by nearly a year. I had no issue with the TSA or airline even as it was mentioned as having expired. My valid identity doesn't change with the expiration date of some printed object.