From Dover train to University Ave At Lackawanna Ave, line 76 bus to Newark Penn Station Amtrak, then train to Philadelphia 30th Street Station Amtrak. 2 h 35 min $182. From Dover train to 34 St - Herald Sq, subway to New York, then bus to Philadelphia, PA. 4 h 13 min $28. From Dover drive to Philadelphia. 1 h 55 min $11.