The airline industry is the central part of the commercial aviation value and supply chain. Nevertheless, it has the lowest profit margin and return on investment compared to other sectors in the chain. This leads to the question whether the airline industry is sustainable in the long run, the...

The paper offers a comment on an earlier article by Hazledine that argued a business model adopted by Air Canada and Air New Zealand allows them to compete with low cost airlines. Examination of the model, however, indicates that it offers only limited protection from low cost airlines...