Amtrak has added the ability to redeem companion and upgrade coupons online and via the Amtrak app. Previously you had to either call in or visit a physical location to get these applied. Full details on how to apply these coupons can be found here. Importantly the upgrade coupons will work fine on existing reservations. This is good news for holders of the Bank of America credit card, as this card offers a complimentary companion coupon and one-class upgrade. The sign up bonus on that card is currently sitting at 30,000 points.
Hat tip to Alqotastic
