Sit on the Right side of the plane for the best views on flights from Sydney to Seattle. Right side wins both the departure from Sydney and the arrival into Seattle, making it the clear choice for the full journey. You get Sydney Harbour on climb-out and Mount Rainier plus the Seattle skyline on descent.

During takeoff from Kingsford Smith International Airport (SYD), sit on the Right side for the best views. Sydney Airport's primary departure runway 34R sends aircraft northward over Botany Bay and then the eastern suburbs. The right side gives you Sydney Harbour, the Opera House, Harbour Bridge, and the CBD skyline as you climb out. Left side gets industrial areas and the southern suburbs. Notable sights include: Sydney Harbour and the Opera House, Sydney Harbour Bridge, CBD skyline including the Centrepoint Tower, Bondi Beach and the eastern coastline.

When landing at Seattle Tacoma International (SEA), sit on the Right side for the best views. Seattle-Tacoma typically uses runway 16R/34L for arrivals from the north or south. On a transpacific approach from the southwest, aircraft generally descend over Puget Sound before turning onto final. The right side gives you Mount Rainier to the southeast, the Olympic Peninsula across Puget Sound, and the Seattle skyline. Left side faces east toward the Cascades but the approach geometry puts the best landmarks on the right. Notable sights include: Mount Rainier (14,411 ft, dominant volcanic cone to the southeast), Puget Sound and its island-dotted waters, Seattle city skyline and Elliott Bay, the Olympic Mountains on the western horizon.

The flight from Kingsford Smith International Airport (SYD) to Seattle Tacoma International (SEA) takes Approximately 17 to 19 hours depending on routing and winds, typically operated as a one-stop service via cities like Melbourne, Brisbane, or Los Angeles, though some routings go direct or via Auckland.

The route tracks northeast across the Coral Sea, then over the vast open Pacific Ocean for the majority of the flight with no significant landmasses. The flight passes north of New Zealand's North Island if routing via the central Pacific. The Hawaiian Islands may be visible distantly depending on the exact routing. As the aircraft approaches North America, the coastline of the Pacific Northwest emerges, with the Cascade Range and its volcanic peaks including Mount Rainier, Mount Adams, and Mount St. Helens becoming visible during descent.