The president stated that the decision to ground the planes was made in conjunction with Candian authorities.
President Trump said the Federal Aviation Administration (FAA) will announce later Wednesday the grounding of two Boeing 737 Max jets, one model of which was involved in the fatal Ethiopian Airlines crash that killed 157 people.
Speaking at the White House on Wednesday afternoon, Trump said both the Boeing 737 Max 8 and 737 Max 9 models will be "grounded upon landing" at their destinations. He said that both pilots and airlines have been notified.
"Any plane currently in the air will go to its destination and thereafter be grounded until further notice," Trump told reporters. "The safety of the American people, and all people, is our paramount concern."
The news comes after Canada's transport minister earlier Wednesday announced the country would be barring the Max 8 jet from its airspace, saying satellite tracking data shows possible but unproven similarities between the Ethiopian Airliner crash and a previous crash involving the model five months ago.