Amtrak offers discounted fares for children aged 2-12 traveling with a full-fare adult ticket holder. The child fare is generally half the adult fare for the same class of service, making travel more affordable for families. Children under 2 travel for free but must share a seat with an adult. When booking tickets, ensure to specify the number of children to receive the correct fare. ... https://reservationsus.com/are-there-sleeper-cars-on-the-train-from-chicago-to-seattle/