Critics argue that these flights are unsustainable due to high operational costs and passenger discomfort. They suggest focusing on more efficient shorter routes instead.

Ultra-long flights pose significant risks including health issues for passengers and crew, increased maintenance needs, and potential financial losses if demand does not meet expectations.

Air Canada's push for ultra-long routes may be driven by a desire to compete with other airlines in connecting remote destinations but could also mask underlying operational inefficiencies.

The success of ultra-long routes will depend heavily on technological advancements in cabin comfort and medical support for long-haul travel. If not addressed, this could lead to significant operational challenges.

Air Canada's ultra-long routes may attract initial interest but face long-term sustainability issues due to high costs and passenger fatigue. Success is uncertain without substantial improvements in technology and service.