This offer is exclusively available at Amtrak.com. This offer is valid for sale between 8/12/14–8/14/14 and valid for travel between 9/16/14–10/9/14. This offer is valid for travel on the Northeast Regional train service only. This offer features one-way rail fares between New York City and Baltimore, MD (Penn Station) and Washington, D.C., only. This offer does not include travel to/from any intermediate cities. Seating is limited; seats may not be available on all trains at all times. Fares are subject to availability. Once purchased, tickets are nonrefundable; exchanges are permitted prior to the original travel date. The discounted one-way fares are valid for all adult passengers; no additional discounts apply. This offer is valid for Coach seats only; no Business class upgrades permitted. This offer is not combinable with any other discount offer. In addition to the discount restrictions, this offer is also subject to any restrictions, blackouts, and refund rules that apply to the type of fare purchased. Fares, routes, and schedules are subject to change without notice. Once travel has begun, no changes to the itinerary are permitted. Other restrictions may apply. Amtrak and Northeast Regional are registered service marks of the National Railroad Passenger Corporation.