Amtrak discounts select 1-way Northeast Regional fares, with prices starting at $11. This price is based on fares departing from Boston (BOS) with arrival in Providence, RI (PVD) on May 29. Blackout dates apply and a 2-week advance purchase is required. This travel deal for travel through January 31, 2017. Other notable 1-way fares:

• Washington D.C. (WAS) to Baltimore (BWI) from $11
• New York (NYP) to Newark, NJ (NWK) from $23
• see all available Amtrak 1-way fares