I recently began riding the Amtrak on the east coast. The train is so much better than flying. You have more room, you don’t have to go through security, and it is quicker to walk in.
The main issue is, especially when you get to the midwest and the western US. There are a lot of delays. The rails aren’t as reliable.
I will be taking an Amtrak trip across the western United States. The trip will help show how reliable the train can be in that region. If you are traveling on the east coast, I recommend you check out the Amtrak.