Sit on the Right side of the plane for the best views on flights from Ontario to Chicago. While the takeoff offers dramatic mountain scenery, the landing approach over Lake Michigan and Chicago's iconic skyline provides the most memorable and distinctive views. The lake and downtown corridor are far more visually striking than the Inland Empire's sprawl.

During takeoff from Ontario International (ONT), sit on the Left side for the best views. Left seats face north and northwest during the typical northeastbound climb-out from ONT, giving direct views of the San Gabriel Mountains and the transition from the Inland Empire's urban sprawl to the higher desert terrain. Right seats would see the flat agricultural areas and less dramatic scenery. Notable sights include: San Gabriel Mountains (immediate north), San Bernardino Mountains (northeast), Mojave Desert floor (extending east), Los Angeles Basin urban grid (southwest).

When landing at Chicago Ohare International (ORD), sit on the Right side for the best views. Right seats face south and southwest during the typical approach to ORD from the west, providing views of Lake Michigan's shoreline, Chicago's downtown skyline, and the lakefront neighborhoods. Left seats would see inland areas with less distinctive features. Notable sights include: Lake Michigan (dominant water feature), Chicago downtown skyline and Willis Tower, Grant Park and Museum Campus, Chicago lakefront neighborhoods.

The flight from Ontario International (ONT) to Chicago Ohare International (ORD) takes Approximately 4 hours 15 minutes.

The flight path crosses the Mojave Desert (sparse, flat terrain), then transitions over the Colorado Plateau and Rocky Mountains (Utah and Colorado show significant elevation changes and canyon systems), before descending into the Great Plains. Notable features include the Colorado River valley, the Wasatch Range near Salt Lake City (visible to the north if on a slightly northern routing), and the transition from high desert to prairie as the flight approaches the Mississippi River valley and Illinois.