Why would you want to fly with Zoom when they are so expensive and have a limited schedule compared to others. I too was about to book with them for 2 adults to Edmonton at Christmas and the cheapest non direct was ex LHR with United at a tad over £1000 and direct with Air Canada at £1370. Zoom were up at £1500 and this was from Gatwick….United for me and the balance pays towards the car hire / hotel