The slightly bewildered driver pulled over by the side of the road and went to a nearby shopping area to ask directions, Lucre said.
"There was no explanation," Lucre said. "We were all wondering out loud."
When the driver returned, a female passenger offered him her GPS-equipped phone.
About 9 a.m. the driver reoriented himself and headed east.
"It was bizarre," Lucre said. "The bus should have arrived at 8:15 but it wasn't until 10:34 we got back."
Officials for Coach USA, which operates Megabus, were apologetic, but they could not explain the detour.
"The journey didn't happen the way we wanted it to," said Edward Hodgson, director of operations. "We want to know why our passengers had a longer trip than they should."
Hodgson said the company began running from Toronto to Philadelphia on July 21.
He said passengers would be given a full refund.
Lucre said he laughed when he first heard the offer.
"A refund? That really isn't the point," he said. "The fare was $3."
Contact staff writer Sam Wood at 215-854-2796 or samwood@phillynews.com.
