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. Over the Great Lakes region you track the southern Ontario landscape and Lake Erie's north shore. As you cross into the US and head southwest over Indiana, Illinois, and Iowa, the left side also gives slightly better angles on the Missouri River valley. The Rocky Mountain arrival clinches it.

During takeoff from Lester B Pearson International (YYZ), sit on the Left side for the best views. YYZ departures heading west or southwest on runways 23/24 give the left side a clear view over downtown Toronto and Lake Ontario. You can track the CN Tower and the waterfront as the aircraft banks southwest toward the US border. Notable sights include: CN Tower and downtown Toronto skyline, Lake Ontario shoreline, Hamilton Harbour to the west, Niagara Peninsula in the distance.

When landing at Denver International (DEN), sit on the Left side for the best views. DEN's primary arrival runways from the east (16L/16R) bring aircraft in from the northeast, putting the Rocky Mountain Front Range — including Longs Peak, Mount Evans, and Pikes Peak — on the left side as you descend. The entire Front Range runs north-south and is unmistakable at altitude. Notable sights include: Rocky Mountain Front Range including Longs Peak and Mount Evans, Denver city grid on the plains, Cherry Creek Reservoir, the distinctive white tent roof of DEN terminal.

The flight from Lester B Pearson International (YYZ) to Denver International (DEN) takes Approximately 3 hours 30 minutes to 3 hours 50 minutes.

Southern Lake Erie shoreline and northern Ohio farmland early in the flight, then the flat agricultural grid of Indiana and Illinois, the Mississippi River crossing near the Iowa-Illinois border, the Missouri River valley, and the increasingly arid high plains of Nebraska and eastern Colorado before the Rockies appear on the horizon