Factual error: In the scene when they are leaving the Pittsburgh Zoo, the sign indicates to turn right for Interstate 79. However Intestate 79 is about 15 miles to the west of the zoo. Also, it is suggested that Interstate 79 is the turnpike (a tolled road), when actually Interstate 76 is the turnpike and Interstate 79 is not tolled.
Factual error: When Lara's test results show her diabetes is dangerously out of control, she would not have been rushed to the hospital without first running a very quick and simple blood sugar test. Diabetics routinely test themselves several times per day, so the prison medical office would already have the test equipment on hand.
Factual error: Just like in the United States, there is no exit passport control in Canada. That is, when one leaves the country one's passport is not checked by Border Services.
Answer: He read their airline tickets and probably the plan for their final destination is packed together with it.