Sit on the Left side of the plane for the best views on flights from St. Louis to Philadelphia. While right seats win on departure, left seats provide superior views for the majority of the flight and especially during the critical landing phase over Philadelphia's rivers and urban geography. The Schuylkill and Delaware Rivers are the flight's most visually distinctive features, and they're best seen from the left.

During takeoff from Lambert St Louis International (STL), sit on the Right side for the best views. STL typically departs eastbound (runways 30L/30R) toward Philadelphia. Right-side seats face north initially, giving views of the Mississippi River's dramatic northward bend and the Gateway Arch area before the aircraft turns southeast. Left seats see the industrial south bank and less distinctive terrain. Notable sights include: Mississippi River (main channel and floodplain), Gateway Arch and downtown St. Louis riverfront, Illinois bluffs across the river to the north, suburban sprawl extending east toward Illinois.

When landing at Philadelphia International (PHL), sit on the Left side for the best views. PHL typically lands westbound (runways 27L/27R). Left-side seats descend over the Schuylkill River valley and central Philadelphia, with clear views of the Delaware River, city grid, and the Appalachian foothills to the west. Right seats see the Atlantic coastal plain and less distinctive urban features. Notable sights include: Delaware River (forming the Pennsylvania-New Jersey border), Schuylkill River (running through central Philadelphia), downtown Philadelphia skyline and grid pattern, Appalachian ridge lines visible to the northwest on the horizon.

The flight from Lambert St Louis International (STL) to Philadelphia International (PHL) takes Approximately 2 hours 45 minutes to 3 hours 15 minutes.

The flight path crosses the Appalachian Mountains (visible as a series of parallel ridges running northeast-southwest, particularly the Blue Ridge and Allegheny ranges in eastern West Virginia and western Pennsylvania). The Ohio River valley is visible during the westbound climb-out from STL. The Potomac River and Washington D.C. area pass to the south of the direct route. The ridge-and-valley topography of Pennsylvania becomes increasingly prominent in the final 90 minutes of flight, with the Susquehanna River visible before descent into Philadelphia.