The Chinatown-to-Chinatown express used to be the cheapest way to get to New York from Boston, but the embattled Fung Wah Bus (617-345-8000) servicing this route has had its share of accidents and mishaps, allowing competitors to get in on this popular mode of transport for the cash-strapped. These days, you can also take Lucky Star (617-426-8801), or ride the double-decker, Wi-Fi enabled fleets of Bolt Bus (877-265-8287) or MegaBus (877-462-6342). All have regular departures, usually every hour or half hour, and cost around $15 or less. The Wi-Fi addition has given the latter two lines an edge, and though Fung Wah’s rocky history has given safety-minded travelers pause, it remains popular. MegaBus leaves from Back Bay Station. All the other low-cost services arrive at and depart from the South Station Transportation Center (700 Atlantic Avenue, at Summer Street), which is also served by the following bus companies.