When Air Canada flight attendants walked off the job earlier a week ago, they had one rallying cry: "Unpaid work won't fly."

It was a reference to the long-standing practice in North America's aviation industry of not paying cabin crew for work they do when they are on the ground, before the plane is in motion.

In contrast, some European airlines, industry experts told the BBC, pay cabin crew monthly wages rather than by the hour.

The pay structure surprised Canadian flyers, many of whom supported the striking workers, one poll commissioned by the union suggested.

The brief strike wreaked havoc during the peak summer travel season, but flights resumed after both sides agreed to a tentative deal on Tuesday.