An Air Canada flight heading to San Francisco from Montreal had to be diverted to Winnipeg after its windshield cracked during the flight Friday morning.

"I was right there in business class so I heard it going and saw the (flight attendant) panic a little bit," said Theresa D'Amore, who was aboard the aircraft.

The plane with 82 passengers was over southern Minnesota when the incident happened.

The pilot did not need to declare an emergency and was able to land the plane in Winnipeg without incident.

"Certainly pilots are well trained in responding to their aircraft, and knowing the capabilities of that aircraft," said Christine Alongi, a spokesperson for the Winnipeg Airports Authority.

While the flight landed without problems, some passengers told CTV News they were worried the whole windshield would collapse.

Air Canada said the Airbus 319 had double-paned windows, which minimizes the chances windshields will blow out.

Officials with Air Canada said the plane was moved to a maintenance hanger, where they'll try to figure out what caused the window to fracture.

A new plane was brought in for the passengers, who resumed their flight to San Francisco later Friday.

- with a report from CTV's Jon Hendricks