Sit on the Left side of the plane for the best views on flights from Toronto to Denver. Left side wins both ends of the flight. The Toronto departure offers the city skyline and lake, and the Denver arrival delivers the full Front Range panorama. During cruise over the Great Lakes region and across the northern Great Plains, the left side also tracks slightly closer to any terrain variation heading southwest.

During takeoff from Downsview (YZD), sit on the Left side for the best views. Downsview's primary runway (15/33) means southbound departures head roughly south, putting the downtown Toronto skyline and Lake Ontario on the right, but a westbound turn toward Denver quickly swings the CN Tower and waterfront to the left side. Climbing out westbound, the left side also captures the sprawling suburban grid of Mississauga and the western Lake Ontario shoreline. Notable sights include: CN Tower and downtown Toronto skyline, Lake Ontario western shoreline, Pearson International Airport runways, Humber River valley.

When landing at Denver International (DEN), sit on the Left side for the best views. Denver International sits east of the city, and aircraft typically approach from the east on westerly headings. On a left-side seat during final approach, you get a clear view of the entire Front Range — the Rocky Mountains stretching from Pikes Peak in the south to Longs Peak in the north — as the aircraft descends over the flat plains. The right side faces east toward featureless prairie. Notable sights include: Front Range Rocky Mountains (Longs Peak to Pikes Peak), Denver city skyline, Rocky Mountain Arsenal National Wildlife Refuge, South Platte River corridor.

The flight from Downsview (YZD) to Denver International (DEN) takes Approximately 3 hours 30 minutes to 4 hours.

The flight crosses southern Lake Michigan near Chicago, then tracks southwest over the flat Illinois and Iowa agricultural plains, crosses the Missouri River near Omaha, and traverses the Nebraska Sandhills and high plains of eastern Colorado before the Front Range comes into view roughly 100 miles out from Denver. The terrain is predominantly flat from Chicago onward until the dramatic Rocky Mountain uplift near Denver.