Sit on the Left side of the plane for the best views on flights from Denver to Boston. Left side wins both ends of the flight. At takeoff you get the full Rocky Mountain Front Range panorama, and at landing you get the Boston skyline and harbor on approach. Over the middle of the flight the left side also faces slightly more toward the Great Lakes region, though at cruising altitude over the Midwest the views are largely flat farmland regardless of side.

During takeoff from Denver International (DEN), sit on the Left side for the best views. DEN typically departs eastward on runways 25L/25R or 34L/34R depending on wind. On an eastbound departure toward Boston, the aircraft climbs and turns northeast, putting the Rocky Mountains on the left (west/northwest) side. You get a sweeping view of the entire Front Range from Pikes Peak in the south to Longs Peak in the north as the plane gains altitude. Notable sights include: Front Range of the Rockies (Pikes Peak, Mount Evans, Longs Peak), Denver metro grid below, Cherry Creek Reservoir, the distinctive white tent roof of DEN terminal receding behind.

When landing at General Edward Lawrence Logan International (BOS), sit on the Left side for the best views. Logan Airport sits on a peninsula in Boston Harbor and typically lands eastbound traffic on runways 04L/04R or 09, approaching from the west or southwest over the city. A left-side seat on approach gives you Boston Harbor, the downtown skyline, Cambridge, and the Charles River basin directly out your window as you descend over the city. Notable sights include: Boston downtown skyline, Boston Harbor and its islands, Charles River and the Cambridge/MIT riverfront, Logan Airport peninsula visible ahead.

The flight from Denver International (DEN) to General Edward Lawrence Logan International (BOS) takes Approximately 3 hours 45 minutes to 4 hours 15 minutes.

The flight tracks northeast across the Nebraska and Iowa plains, then over southern Wisconsin or northern Illinois, crossing Lake Michigan or skirting its southern shore near Chicago, then over northern Indiana, Ohio, and Pennsylvania before descending into New England. The Great Lakes — particularly Lake Michigan and Lake Erie — are the most visually distinctive midpoint features. The Appalachian ridges of Pennsylvania and upstate New York appear as parallel corrugated folds roughly an hour before landing.