Sit on the Left side of the plane for the best views on flights from Keflavik to Seattle. Left side wins both departure and arrival. Over Iceland you get Reykjavik and Snæfellsjökull; on arrival into Seattle you get Mount Rainier, the Cascades, and the city skyline. The right side offers open ocean at departure and the less dramatic Olympic Peninsula on arrival.

During takeoff from Keflavik Nas (KEF), sit on the Left side for the best views. Keflavik typically departs on runway 28 heading west-northwest, then turns north toward the polar route. A left/south-facing seat captures Reykjavik city across Faxaflói Bay and the Snæfellsjökull glacier on the Snæfellsnes Peninsula. The right side faces open North Atlantic with little to see. Notable sights include: Reykjavik city and harbor, Faxaflói Bay, Snæfellsjökull glacier-capped volcano, Reykjanes lava fields directly below.

When landing at Seattle Tacoma International (SEA), sit on the Left side for the best views. Seattle-Tacoma typically lands on runways 16L/16R heading south, meaning the aircraft approaches from the north over Puget Sound. Left/east-facing seats get the Cascade Range including Mount Rainier, Mount Baker, and the Seattle skyline. The right side faces west over the Olympic Peninsula with less dramatic terrain. Notable sights include: Mount Rainier, Mount Baker, Seattle downtown skyline, Puget Sound.

The flight from Keflavik Nas (KEF) to Seattle Tacoma International (SEA) takes Approximately 9 to 10 hours.

The great circle route from KEF to SEA tracks across southern Greenland — the Greenland ice sheet and coastal fjords may be visible on the left side early in the flight. The route then crosses the Canadian Arctic archipelago and passes over the Yukon and northern British Columbia, where the Coast Mountains and vast uninhabited boreal forest are visible below before descending into Washington State.