Sit on the Right side of the plane for the best views on flights from Ontario to Atlanta. The right side wins overall because the San Gabriel Mountain departure from ONT is one of the most dramatic urban-to-mountain views in the American Southwest, and the right side also tracks the southern edge of the Mojave and Arizona desert terrain during cruise. The Atlanta landing view on the left is good but less spectacular than the ONT departure scenery.

During takeoff from Ontario International (ONT), sit on the Right side for the best views. ONT typically departs east on runway 26R/08L. Departing eastbound, the right (south) side gives you a clear look at the San Gabriel Mountains including Mount San Antonio (Mount Baldy) at 10,064 ft rising sharply above the Inland Empire sprawl. The left side faces north toward the San Bernardino Mountains but at a less dramatic angle during initial climb. Notable sights include: Mount San Antonio (Mount Baldy), San Gabriel Mountains ridgeline, Inland Empire urban grid, Ontario city grid below.

When landing at The William B Hartsfield Atlanta International (ATL), sit on the Left side for the best views. ATL typically lands from the east on runways 08L/08R or from the west on 26L/26R. On the common westbound approach over the city, the left (south) side sees the Atlanta downtown skyline and Midtown clearly. On an eastbound approach, the left side still captures the city core as you cross over it. Either way, left gives the better urban panorama. Notable sights include: Atlanta downtown skyline, Midtown Atlanta towers, Stone Mountain (visible to the northeast as a distinctive granite dome), Hartsfield-Jackson airport complex itself.

The flight from Ontario International (ONT) to The William B Hartsfield Atlanta International (ATL) takes Approximately 3 hours 30 minutes to 3 hours 50 minutes.

After clearing the San Bernardino Mountains, the route crosses the Mojave Desert and then the lower Colorado River near the Arizona-California border. Over Arizona and New Mexico the terrain is high desert plateau with the occasional mountain range visible. Crossing into Texas the land flattens into the Llano Estacado and then the rolling plains. Over Louisiana and Mississippi the terrain becomes low and swampy with river systems visible before entering Georgia's piedmont.