MegaBus canceled 35 trips to and from Boston Friday, affecting about 2,500 passengers.
Travelers whose trains or buses were canceled got full refunds. All airlines allowed passengers scheduled for Friday to change flights to other days, although policies varied widely. Grace periods ranged from a few days on airlines like American and Delta, while United Airlines gave passengers up to a year from the date they purchased their tickets to fly.
Passengers trying to leave Boston by air were met by Massachusetts State Police searching vehicles at entrances to Logan. The airport handles about 1,000 flights a day and has been operating at a heightened level of security since two bombs exploded Monday near the finish line of the Boston Marathon, said Matthew Brelis, director of media relations for MassPort, which runs Logan.
While Friday's mass transit shutdown was unusual, it wasn't the first. Boston cut off the subway two days in February. The Massachusetts Bay Transportation Authority cut bus and train service ahead of Hurricane Irene and Superstorm Sandy.