Sit on the Left side of the plane for the best views on flights from Ontario to Dallas-fort Worth. The left side delivers the most dramatic single moment of the flight — the close-up view of the San Gabriel Mountains and Mount Baldy on departure, which is genuinely spectacular. The landing view on the right is interesting but Dallas from the air is relatively flat and hazy. Left wins overall for the mountain departure alone.

During takeoff from Ontario International (ONT), sit on the Left side for the best views. ONT typically departs east on runway 26R/08L. An eastbound departure on runway 08 puts the San Gabriel Mountains directly off the left (north) side as you climb out, with Mount Baldy and the front range filling the window. The urban sprawl of the Inland Empire spreads below while the mountains rise dramatically to the north. Notable sights include: Mount San Antonio (Mount Baldy) at 10,064 ft, San Gabriel Mountains front range, Inland Empire urban grid, Ontario city grid below.

When landing at Dallas Fort Worth International (DFW), sit on the Right side for the best views. DFW typically lands from the east on westbound approaches to runways 17/35 or 18L/36R. On a standard approach from the east, the right (north) side offers a clear view of downtown Dallas skyline and the sprawling DFW metroplex. The left side faces south toward Fort Worth and open Texas plains with less visual interest. Notable sights include: Downtown Dallas skyline, Lake Grapevine, DFW airport footprint, Fort Worth skyline in far distance.

The flight from Ontario International (ONT) to Dallas Fort Worth International (DFW) takes Approximately 2 hours 20 minutes.

After clearing the San Bernardino Mountains, the route crosses the Mojave Desert and then the lower Colorado River valley near Blythe. The flight then tracks over the Sonoran Desert transition into Arizona, crossing sparse desert scrubland and the occasional Interstate highway. Over New Mexico and west Texas the terrain is flat high desert plateau — the Llano Estacado becomes visible as a broad elevated plain before the landscape flattens into the Texas Permian Basin and then the rolling Cross Timbers region approaching DFW.