Sit on the Left side of the plane for the best views on flights from Teresina to Seattle. While takeoff offers river delta views, the landing approach into Seattle provides far more dramatic and memorable scenery with Mount Rainier and the Cascade Range. Left side captures the most iconic visual features of this route.

During takeoff from Senador Petronio Portella (THE), sit on the Right side for the best views. Right side offers views of the Parnaíba River delta and floodplain wetlands as the aircraft climbs northwestward from Teresina. The river's braided channels and oxbow lakes are distinctive from altitude and visible during the initial climb phase. Notable sights include: Parnaíba River delta and floodplain, Teresina city grid below, Atlantic coastal plains to the northeast, cerrado scrubland transitioning northward.

When landing at Seattle Tacoma International (SEA), sit on the Left side for the best views. Left side provides excellent views of the Cascade Range and Mount Rainier during descent into Seattle. As the aircraft approaches from the southeast, the left wing reveals the dramatic volcanic peaks and foothills that dominate the approach corridor. Notable sights include: Mount Rainier (14,411 ft), Cascade Range peaks, Puget Sound, Seattle urban area and Elliott Bay.

The flight from Senador Petronio Portella (THE) to Seattle Tacoma International (SEA) takes Approximately 9.5 to 10.5 hours.

The flight path crosses the Gulf of Mexico (viewing the Yucatan Peninsula and Mexican coastline), then traverses the southern United States including the Mississippi River valley, Great Plains, and Rocky Mountain foothills. Notable features include the Mississippi River delta near New Orleans, the Rio Grande valley, the Colorado Plateau, and the Sierra Nevada range before reaching the Pacific Northwest.