Sit on the Left side of the plane for the best views on flights from Washington to Niamey. The left side captures the best of both ends: Washington DC's recognizable urban geography on departure and a reasonable view of the Niger River approach. Across the Atlantic and Sahara the views are largely featureless ocean and desert, but the departure experience from Dulles on the left is the most memorable segment of this flight.

During takeoff from Washington Dulles International (IAD), sit on the Left side for the best views. Dulles typically departs east on runways 01L/01R or west on 19L/19R. On an eastbound departure climbing out, the left side faces north toward the Potomac River and Washington DC's monuments and the Capitol dome. On a westbound departure, left side gets the Blue Ridge Mountains. Either way, left wins for the urban core views. Notable sights include: Washington DC monuments and Mall, Potomac River, Chesapeake Bay (distant), Blue Ridge Mountains to the west.

When landing at Diori Hamani (NIM), sit on the Right side for the best views. Niamey's airport sits just north of the Niger River, and aircraft typically approach from the northeast on runway 05/23. On approach from the northeast, the right side looks south toward the Niger River's broad bend through Niamey city, giving a clear view of the river and the urban layout of the capital. Notable sights include: Niger River broad bend through Niamey, Niamey urban grid, Kennedy Bridge over the Niger, Sahel scrubland transitioning to riverine vegetation.

The flight from Washington Dulles International (IAD) to Diori Hamani (NIM) takes Approximately 10 to 11 hours nonstop, though most routings connect through European or West African hubs adding 14 to 18 hours total.

The route crosses the North Atlantic Ocean, the Iberian Peninsula (Spain and Portugal with the Meseta plateau visible), the Strait of Gibraltar, the Atlas Mountains of Morocco and Algeria, then the vast Sahara Desert with the Ahaggar massif in southern Algeria as a rare topographic feature, before descending into the Sahel zone of Mali and Niger