Laura Mah, one of the passengers on Flight 157 from Brussels, Belgium, destined for Montreal, said passengers were unhappy with the airline's lack of action.
"People started getting really frustrated. We got updates at the beginning, but then eventually they just stopped," she said. "Other passengers were very uncomfortable, hot and just wanted answers. We just kept getting the message that we needed to wait and the plane needs to refuel."
Eventually, Mah said, police boarded the plane and began handing out water to passengers.
The 911 calls triggered a "full emergency response" that included the Airport Emergency Response Service, Ottawa Paramedic Services and Ottawa Police Service, the airport said in a statement. Police treated one passenger, but airport officials did not specify what for.
"We had a gate available and air stairs ready in the event that the airline decided to deplane. We also had buses on the tarmac ready to shuttle passengers to the terminal -- buses the authority purchased specifically for situations such as this," the statement said.
"Neither the ground handling service nor the airline requested either of these during the event."
Twenty Air Transat flights that were destined for Toronto and Montreal on Monday had to be diverted to Ottawa because of weather, the airline said. Fifteen of the flights were international and carried almost 5,000