Amtrak's currently offering 30% off train tickets around the US — this means you can travel for as little as $15. The sale ends tonight, so book while you can.
15. Feb. 2020 - 31. May. 2020
29. Jan. 2020 - 30. Jan. 2020
This deal was published more than a week ago. Therefore it is possible prices are not up to date or are no longer available.