From Danbury, CT bus to Port Authority Bus Terminal then bus to Arrival Area Inside Ac Bus Terminal. 5 h 18 min $48. From Danbury train to South Norwalk, train to Stamford Amtrak, train to 30Th St. Phl., then train to Atlantic City. 7 h 1 min $221. From Danbury drive to Atlantic City. 3 h 19 min $22.