Sit on the Left side of the plane for the best views on flights from Denver to Keflavik. Left side wins both the departure and arrival. During the flight, the left side also faces south over Greenland's ice sheet interior and the Labrador Sea, offering better views of Greenland's glaciated coastline and icebergs if flying the northern great circle route.

During takeoff from Denver International (DEN), sit on the Left side for the best views. DEN typically departs east on runway 16R/34L or uses eastward runways, then turns northwest toward Iceland. A left-side seat captures the Rocky Mountain Front Range — including Pikes Peak, Mount Evans, and Longs Peak — as the aircraft banks north and northwest. The entire snow-capped Front Range stretches dramatically along the left side during the climb-out turn. Notable sights include: Rocky Mountain Front Range, Longs Peak, Mount Evans, Denver city grid receding to the east.

When landing at Keflavik Nas (KEF), sit on the Left side for the best views. KEF approaches from the southeast over the Atlantic, typically landing on runway 28 or 10. On approach from the southeast, the left side faces south toward the Reykjanes Peninsula coastline, the lava fields, and the Blue Lagoon geothermal area — all highly distinctive Icelandic features. The right side faces north toward open water and featureless ocean. Notable sights include: Reykjanes Peninsula lava fields, Blue Lagoon geothermal pool, Atlantic coastline, Reykjavik visible to the north on the right side.

The flight from Denver International (DEN) to Keflavik Nas (KEF) takes Approximately 8.5 to 9.5 hours.

The great circle route from DEN to KEF tracks northeast over the Canadian prairies (Manitoba, Ontario), then over Hudson Bay, across southern Baffin Island, over the Labrador Sea, clipping the southern tip of Greenland near Narsarsuaq with its fjords and ice sheet edge, then across the Denmark Strait to Iceland. Hudson Bay appears as a vast flat grey inland sea. Greenland's southern coast shows dramatic fjords, outlet glaciers, and the edge of the Greenland Ice Sheet — the most visually striking midpoint feature on this route.