Sit on the Right side of the plane for the best views on flights from Seattle to Portland. Right-side seats capture the most dramatic scenery: the Cascade Range volcanic peaks during takeoff and the extended views of the Cascades and interior Pacific Northwest terrain throughout the flight. Left offers good landing views but right provides superior scenic value for the majority of the journey.

During takeoff from Seattle Tacoma International (SEA), sit on the Right side for the best views. Right-side seats offer immediate views of the Cascade Range as the aircraft climbs eastbound out of Seattle. The volcanic peaks and forested slopes dominate the eastern horizon during the initial climb phase. Notable sights include: Cascade Range (Mount Rainier, Mount Baker), Puget Sound, Olympic Mountains to the west.

When landing at Portland International Jetport (PWM), sit on the Left side for the best views. Left-side seats provide excellent views during the descent into Portland as the aircraft approaches from the west. The Willamette River valley, Portland's urban grid, and the Cascade Range to the east are all visible on the left side during final approach. Notable sights include: Willamette River, Portland metropolitan area, Cascade Range (Mount Hood visible on clear days), Columbia River to the north.

The flight from Seattle Tacoma International (SEA) to Portland International Jetport (PWM) takes 5h 15m.

The flight path crosses the Cascade Range, then follows over central Oregon high desert and plateau terrain, transitioning through the Blue Mountains of northeastern Oregon, then descends into the Willamette Valley approaching Portland. Notable features include the volcanic peaks of the Cascades (Mount Jefferson, Three Sisters visible on clear days), the arid interior plateau of central Oregon, and the transition to the wetter Willamette Valley ecosystem.