Some of the cheapest bus companies in the U.S. are Megabus, BoltBus, Vamoose and Lux Bus, according to BudgetTravel.com. Other budget bus companies are RedCoach and Tripper Bus.
Megabus serves over 50 cities in the U.S. as of 2015, mostly in the Midwest and Northeast regions. The British company is the largest budget bus company in the United States. BoltBus serves eight cities in the Northeast, and Vamoose connects four cities in the Northeast, including New York and the D.C. metro area. Another company that services the same area is Tripper Bus. RedCoach offers cheap bus trips in Georgia and Florida, serving 16 cities in the area.