Sit on the Right side of the plane for the best views on flights from St. Louis to Denver. The right side scores higher due to the dramatic Rocky Mountain approach and landing sequence. While the St. Louis departure offers modest urban and river scenery, the westbound cruise over the Great Plains is relatively featureless. The right side's advantage comes from the striking visual transition from flat plains to the Front Range peaks during descent, plus the mountain-dominated cruise segment—a more varied and visually compelling experience overall.

During takeoff from Lambert St Louis International (STL), sit on the Left side for the best views. St. Louis sits on the Mississippi River with the Gateway Arch as a distinctive landmark. Left-side departures heading west offer a clear view of the river confluence and urban core before climbing over relatively flat terrain. Notable sights include: Gateway Arch, Mississippi River, St. Louis downtown skyline, Illinois plains to the east.

When landing at Rocky Mountain Metropolitan Airport (BJC), sit on the Right side for the best views. Right-side approaches to Rocky Mountain Metropolitan Airport offer dramatic views of the Front Range as the aircraft descends. The Rockies rise sharply from the plains, with peaks like Mount Evans and the Continental Divide creating a striking visual transition from flat terrain to alpine landscape. Notable sights include: Front Range peaks (Mount Evans, Mount Bierstadt visible), South Platte River valley, Denver metropolitan area sprawl, transition from Great Plains to Rocky Mountains.

The flight from Lambert St Louis International (STL) to Rocky Mountain Metropolitan Airport (BJC) takes 2h 15m.

Kansas plains (flat, minimal features), eastern Colorado plains (gradual elevation increase), South Platte River drainage system, foothills transition zone west of Denver