Two Pilots have been arrested at Glasgow Airport in relation to being allegedly impaired through alcohol.
The Airbus A330 was due to fly from Glasgow to Toronto on Monday afternoon with 345 passengers and nine crew on board.
The pilots, aged 39 and 37, were arrested under the Railways and Transport Safety Act.
They are due to appear at Paisley sheriff court.
The flight, which should have departed on Monday at 13:00, was rescheduled to leave Glasgow Airport on Tuesday morning.
Some of the passengers checking in at Glasgow Airport said they were angry at the way they had been treated by the airline and by the lack of information from staff.
One man told BBC Scotland's Good Morning Scotland programme: "There is some compensation, money for flying, but I don't think that will be acceptable for anyone who's been inconvenienced for the whole day."
He added: "They didn't give us any information. They herded people off [the plane] like cattle into a bus...it's not good enough."