I flew without ID in Dec 2019 within the USA. I forgot both my wallet with my (non-REAL) ID, and my phone (which is a nokia dumb phone), at home and didn't realized till after the long car ride to the airport. There was no time to go back home.
We tried flying anyway. They pulled me off to the side in the security line and called up someone they said was in washington DC. The local TSA said the DC people would do a search into my life and who I claimed to be. They then asked me a series of questions about buildings (ie, a church) near where I lived, the university I went to, my father's birthday, etc. I passed despite not knowing quite a bit about my own life and they let me on the plane. But with an escort through all the security screening section.
It was nerve wracking the entire trip not knowing if I'd be able to fly home. The same process was repeated but again I answered to their satisfaction and was able to fly. I don't recommend doing this intentionally.
We tried flying anyway. They pulled me off to the side in the security line and called up someone they said was in washington DC. The local TSA said the DC people would do a search into my life and who I claimed to be. They then asked me a series of questions about buildings (ie, a church) near where I lived, the university I went to, my father's birthday, etc. I passed despite not knowing quite a bit about my own life and they let me on the plane. But with an escort through all the security screening section.
It was nerve wracking the entire trip not knowing if I'd be able to fly home. The same process was repeated but again I answered to their satisfaction and was able to fly. I don't recommend doing this intentionally.