Sit on the Left side of the plane for the best views on flights from St. Louis to Portland. While takeoff offers good river views on the right, the landing approach with Mount Hood and the Cascade Range in full view from the left side is the flight's signature moment. The westbound routing means left-side passengers get extended views of Oregon's volcanic landscape during the critical descent phase.

During takeoff from Lambert St Louis International (STL), sit on the Right side for the best views. Right-side seats capture the Mississippi River's dramatic northward bend and the downtown St. Louis skyline immediately after departure. Runways 30L/30R are standard for westbound flights, and right-side passengers get the river's eastern bluffs and Illinois shoreline as you climb northwest. Notable sights include: Mississippi River (main channel and Illinois floodplain), Gateway Arch and downtown St. Louis skyline, Illinois bluffs east of river, confluence area where Missouri River joins from the west.

When landing at Portland International (PDX), sit on the Left side for the best views. Left-side seats offer the best approach view of the Cascade Range and Mount Hood. PDX typically uses runways 28L/28R for westbound arrivals, and left-side passengers see the volcanic peaks rising dramatically from the Willamette Valley floor during descent. Notable sights include: Mount Hood (11,240 ft, snow-capped volcanic cone), Cascade Range ridgeline, Willamette River valley floor, Portland urban area and Columbia River.

The flight from Lambert St Louis International (STL) to Portland International (PDX) takes Approximately 4 hours 15 minutes.

The flight path crosses the Blue Mountains of northeastern Oregon (around 45.5°N, 118.5°W) at cruise altitude—visible as a textured brown-and-green ridge system. The Snake River canyon system appears briefly in the southeast as you pass over the Oregon-Idaho border region. The Wallowa Valley and Eagle Cap Wilderness form a distinctive high plateau area. As you approach Oregon's Cascade Range, the terrain transitions from high desert to forested volcanic peaks, with the Deschutes River canyon visible as a dark linear feature cutting through the landscape.