These tickets are valid for travel March 25th – July 29th, and are available on most Amtrak routes for both coach and Acela business class tickets. The companion and full-fare passenger must travel together on the same itinerary with tickets issued together.
Note that this offer is valid on both one-way and roundtrip tickets.
To get this deal, select your itinerary, then change the number of adults from one to two and click “Find Trains”. Directly below the ticket price, you will see “Promo Applied” for eligible fares. Note that you may need to try other dates if you are not seeing the promotional prices.