Sit on the Right side of the plane for the best views on flights from Seattle to Denver. The right side delivers the dramatic Seattle departure views over Elliott Bay and Puget Sound, and during the cruise over eastern Washington and Idaho, right-side passengers also get better angles on the Snake River Plain and the distant Sawtooth Range. The left side wins at landing, but the takeoff and mid-flight scenery tips the balance to the right.

During takeoff from Boeing Fld King Co International (BFI), sit on the Right side for the best views. BFI's primary departure runway 13R sends aircraft southeast over the Duwamish industrial waterway and then climbing toward the Cascades. Right-side passengers get a clear look back at downtown Seattle, Elliott Bay, and the Olympic Peninsula across Puget Sound as the aircraft banks eastward. Notable sights include: Elliott Bay and downtown Seattle skyline, Puget Sound with the Olympic Peninsula beyond, Lake Washington to the east, Mount Rainier emerging to the southeast.

When landing at Denver International (DEN), sit on the Left side for the best views. DEN's primary arrival runways from the west typically bring aircraft in on headings around 070-090 degrees. Left-side passengers get a broad view of the Front Range — the Rocky Mountain foothills rising sharply from the plains — including Longs Peak and the Indian Peaks Wilderness as the aircraft descends over the flat eastern Colorado prairie. Notable sights include: Front Range Rocky Mountains including Longs Peak, Denver city grid and downtown skyline, Rocky Mountain National Park peaks on the horizon, the flat checkerboard agricultural plains of the Denver Basin.

The flight from Boeing Fld King Co International (BFI) to Denver International (DEN) takes Approximately 2 hours 15 minutes to 2 hours 30 minutes.

The flight crosses the Cascade Range over central Washington, then the Columbia Plateau's basalt canyon country including the Snake River Canyon, the broad high desert of southern Idaho, the Sawtooth and Bitterroot ranges visible to the north, then the Wyoming Basin's high plains before descending over the Colorado-Wyoming border and the Denver Basin. The Rocky Mountain Front Range is visible well before descent begins.