Restrictions may apply. These offers are exclusively available at www.amtrak.com. These offers are valid for sale between September 24-26 and valid for travel between October 29 - November 21. These special offers are valid for travel on the Northeast Regional train service between Philadelphia, PA to Washington, DC, Baltimore, MD (Penn Station), or Boston, MA only. Seating is limited; seats may not be available on all trains at all times. Once purchased fares are non-refundable; exchanges are permitted prior to the original travel date. The discounted fares are valid for all passengers; no additional discounts apply. These offers are valid for Coach seats only; no Business class upgrades permitted. These offers are not combinable with any other discount offer. In addition to the discount restrictions these offers are 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. Offer does not include travel to/from any intermediate cities. Other restrictions may apply. Amtrak, Enjoy the journey, and Northeast Regional are service marks of the National Railroad Passenger Corporation.