The list of countries grounding Boeing 7-37 Max 8s continues to grow but Canada and the U.S. still aren't on the list.
A university management professor at McGill University says grounding all Boeing 7-37 Max 8s in Canada could prove costly for Canadian airlines.
Karl Moore notes that some flights would have to be cancelled, while others would have to use larger, more trusted jets — which come with more expensive fuel costs.
Transport Minister Marc Garneau cancelled all his meetings on Tuesday to meet with civil aviation experts to decide if Ottawa should suspend use of the Max 8 in the wake of the Ethiopian Airlines crash that killed 157 people Sunday.
All 18 of the Canadians who died have now been identified.
Meanwhile, the White House is rejecting calls for the U.S. to ground the planes.
Press Secretary Sarah Sanders says the Federal Aviation Authority (FAA) and Transportation Department are part of an extensive review that is happening after the deadly crash.
Sanders said it's too early in the process despite more than a dozen other countries halting Boeing 737 Max flights.
The countries who have stopped using the planes include France, Germany, China, Australia, Ireland, Maylaysia, Oman, United Kingdom, Indonesia, Singapore, Italy and India.
In a statement, Boeing says safety is its number-one priority and it has full confidence in the planes.