Sit on the Right side of the plane for the best views on flights from London to Toronto. The right side wins overall. The London departure view of the Thames and city is genuinely spectacular and hard to beat. The landing view of Toronto from the left is excellent but Buttonville is a small airport with a less dramatic approach than a major hub. Right side gets the better of the two signature moments on this route.

During takeoff from Heathrow (LHR), sit on the Right side for the best views. Heathrow's dominant departure runway is 27L/27R, heading west. On a westbound departure, the right side gives you a clear view south over central London as you climb out — the Thames snaking through the city, the City of London skyline, and Canary Wharf are all visible before you turn northwest. The left side faces north toward the suburbs with far less to see. Notable sights include: River Thames bends through central London, Canary Wharf tower cluster, Windsor Castle and Windsor Great Park to the southwest, M25 orbital motorway arc.

When landing at Buttonville Muni (YKZ), sit on the Left side for the best views. Buttonville (YKZ) is a small general aviation airport northeast of Toronto. Approaches typically come in from the east or northeast. On final approach from the east, the left side faces south and gives you a clear view over the Toronto skyline — the CN Tower is unmistakable — and Lake Ontario stretching to the horizon. The right side faces north over suburban sprawl with nothing comparable. Notable sights include: CN Tower and downtown Toronto skyline, Lake Ontario shoreline, Toronto Islands, suburban grid of Markham and Scarborough below.

The flight from Heathrow (LHR) to Buttonville Muni (YKZ) takes Approximately 8 to 8.5 hours westbound.

The route tracks northwest over Ireland and the Irish Sea, then across the North Atlantic at high latitude passing south of Greenland and over the Labrador Sea. Southern Greenland's ice sheet edge may be visible as a white mass on the horizon from either side at cruise altitude. The route then crosses Labrador and Quebec — vast boreal forest and lakes — before descending over Ontario. The St. Lawrence River and its wide estuary are a notable feature on the descent, visible as a massive grey-blue waterway cutting through the landscape roughly an hour before landing.