Sit on the Left side of the plane for the best views on flights from London to Toronto. Left side wins both the departure over London and the arrival into Toronto, making it the clear choice for the full journey. Over the Atlantic and Canada the views are more symmetric, but the bookend city views both favor the left.

During takeoff from Heathrow (LHR), sit on the Left side for the best views. Heathrow departures on the dominant westbound runways (09L/09R departing east, then turning northwest) give left-side passengers views over central London. You'll see the Thames snaking through the city, the dense urban grid of West London, and on clear days the Canary Wharf cluster and City of London towers to the east. Right side faces south toward Surrey suburbs with little of note. Notable sights include: River Thames bends through West/Central London, Canary Wharf tower cluster on the eastern horizon, Windsor Castle and Windsor Great Park to the west-southwest, Wembley Stadium arch visible to the north.

When landing at City Centre (YTZ), sit on the Left side for the best views. Billy Bishop Toronto City Airport (YTZ) sits on an island in Lake Ontario, and aircraft typically approach from the west or northwest over the lake. Left-side passengers get the iconic Toronto downtown skyline — CN Tower, Rogers Centre, and the Financial District towers — directly in view during the approach, with Lake Ontario filling the foreground. Right side faces away from downtown toward the eastern lakeshore. Notable sights include: CN Tower and Toronto downtown skyline, Lake Ontario stretching to the south, Rogers Centre dome adjacent to the CN Tower, Toronto Islands directly below on final approach.

The flight from Heathrow (LHR) to City Centre (YTZ) takes Approximately 8 to 8.5 hours westbound.

The route tracks northwest over Ireland and the Irish Sea before crossing the North Atlantic. Southern Greenland's ice sheet and fjord-cut coastline may be visible depending on exact routing. The flight then crosses Labrador and Quebec — vast boreal forest, the St. Lawrence River system, and the Canadian Shield's lake-studded granite terrain — before descending toward Lake Ontario and Toronto.