Air Canada is suspending its guidance for third-quarter and full-year operating results after the union defied back-to-work orders, which further halted the airline's plan to resume flights.

By Allison Lampert and Rajesh Kumar Singh MONTREAL/CHICAGO (Reuters) -A crippling strike by Air Canada flight attendants that grounded thousands of flights over wages and unpaid labor is the latest blow to the airline industry's compensation system that does not fully pay cabin crews for their hours at work.