Air passengers were still scrambling to rebook their flights home on Sunday, as a labour dispute between Air Canada and the union representing flight attendants continued to ground planes around the world.

Travellers in Canada and abroad scrambled to secure flights on Sunday after striking Air Canada flight attendants defied a federal back-to-work order, abruptly halting the airline's plans to resume operations.

Katherine Twaddle, who came to Canada from Britain for the Stratford theatre festival, said she is avoiding accepting a refund from Air Canada for her cancelled flight back to London. She worries it would forfeit her right to a rebooking.