American Airlines and WestJet Airlines on Tuesday announced they have entered into an interline agreement that will expand American's service to 25 new Canadian cities.
United's cost of regional service will be mostly prohibitive unless regional carriers are able to reduce costs by 30% to compete with the United's own product.
An Iran Air Boeing 727 carrying more than 100 people crashed in northwestern Iran on Sunday evening, state-run media reported, killing at least 70 people.