Cheap Train tickets to Kingston, RI, US

What are the most popular routes to Kingston?

Boston - KingstonAverage priceR 382Average duration55mDaily departures27
New York City - KingstonAverage priceR 991Average duration3h 12mDaily departures10
Philadelphia - KingstonAverage priceR 2 534Average duration5h 3mDaily departures10
Washington - KingstonAverage priceR 3 108Average duration6h 59mDaily departures9
New Haven - KingstonAverage priceR 668Average duration1h 28mDaily departures16