Sit on the Left side of the plane for the best views on flights from Denver to San Diego. The left side wins both takeoff and landing — dramatic Front Range mountain views leaving Denver, and a scenic Pacific coastline plus San Diego Bay approach at the end. The right side is flat plains at departure and mostly inland terrain at arrival.

During takeoff from Denver International (DEN), sit on the Left side for the best views. Departing DEN to the south/southwest, the left side gets a clear view back over the Front Range of the Rockies, including the Denver foothills and Pikes Peak area as the plane climbs and turns. The right side only shows flat eastern plains. Notable sights include: Front Range foothills, Pikes Peak, South Platte River valley, Denver suburban grid.

When landing at San Diego International Lindbergh Fld (SAN), sit on the Left side for the best views. On approach to SAN from the north or east, the left side typically reveals the Pacific coastline, La Jolla cliffs, and San Diego Bay just before the tight downtown approach. The right side mostly shows inland mesas and suburban sprawl. Notable sights include: La Jolla coastline, Mission Bay, San Diego Bay, downtown San Diego skyline.

The flight from Denver International (DEN) to San Diego International Lindbergh Fld (SAN) takes 2h 30m.

Southern Rocky Mountains giving way to the Colorado Plateau, followed by the deserts and mountain ranges of southern Utah, Arizona, and the Mojave/Sonoran transition zone near the California border