Sit on the Left side of the plane for the best views on flights from New York to Ontario. While takeoff favors the right for Manhattan views, the landing approach over the San Gabriel Mountains is more visually distinctive and geographically dramatic. The left side captures the mountain range's scale and detail during descent, which is the more memorable segment of this cross-country flight.

During takeoff from La Guardia (LGA), sit on the Right side for the best views. LGA typically departs eastbound (Runways 04/22, with 04 favored for westbound flights). Right-side seats offer views of Manhattan's skyline as you climb out over the East River and Queens, with the Hudson River and New Jersey visible to the left but less dramatic during initial climb. Notable sights include: Manhattan skyline (Empire State Building, Chrysler Building visible in cluster), East River, Queens residential areas, Flushing Bay.

When landing at Ontario International (ONT), sit on the Left side for the best views. ONT typically lands westbound (Runways 08/26, with 26 favored for eastbound arrivals). Left-side seats during descent offer views of the San Gabriel Mountains to the north and the sprawling Los Angeles basin. Right seats see mostly inland desert and less distinctive terrain. Notable sights include: San Gabriel Mountains (snow-capped peaks visible on clear days), Los Angeles basin urban grid, San Bernardino Valley, Inland Empire sprawl.

The flight from La Guardia (LGA) to Ontario International (ONT) takes Approximately 5 hours 15 minutes.

The flight path crosses the continental United States at roughly 35,000-37,000 feet. Notable features include: the Appalachian Mountains (visible as a textured ridge system 1-2 hours after departure, receding to the south); the Mississippi River valley (appearing as a broad, lighter corridor through the Midwest around hour 2-2.5); the Great Plains (vast, featureless terrain with occasional river valleys and scattered cloud cover, hours 2.5-4); the Rocky Mountains (visible as a distinct north-south mountain chain with peaks and valleys, appearing around hour 4, with the Continental Divide clearly marked); and the Colorado Plateau (high desert terrain with visible canyons and mesas as you approach the Southwest, final hour). The Sangre de Cristo Range and Wasatch Range are typically visible depending on exact routing. Clear days offer views of the Great Salt Lake. Approaching California, the Sierra Nevada appears as a major north-south ridge before descending into the Central Valley and then the Inland Empire.