Sit on the Left side of the plane for the best views on flights from Portland to Houston. Left side wins both takeoff and landing. The Cascade volcanoes and Columbia River at departure are the visual highlight of the flight, and the Houston skyline on approach is the best view at arrival. The middle portion of the flight over central Oregon, Nevada, and Texas is largely flat and featureless regardless of side.

During takeoff from Portland International (PDX), sit on the Left side for the best views. PDX departures on runway 28L/28R head west initially before turning south. The left side gives you a clear view of the Columbia River, the Portland metro grid, and Mount Hood rising to the southeast. As the aircraft banks south toward Houston, the left side tracks the Cascades. Notable sights include: Mount Hood (11,249 ft), Columbia River, Portland city grid, Mount St. Helens on the distant horizon to the north.

When landing at George Bush Intcntl Houston (IAH), sit on the Left side for the best views. IAH arrivals typically come in from the north or northwest on runways oriented roughly 15/33. On approach from the northwest, the left side faces east and southeast, giving a clear view of the Houston downtown skyline and the sprawling urban grid. The right side faces west toward flat featureless suburban sprawl. Notable sights include: Houston downtown skyline, Houston Ship Channel, Lake Houston to the northeast, Texas Medical Center district.

The flight from Portland International (PDX) to George Bush Intcntl Houston (IAH) takes Approximately 3 hours 30 minutes to 4 hours.

After leaving the Cascades, the route crosses the high desert of central Oregon and Nevada, then the flat scrubland of west Texas. The Llano Estacado plateau of the Texas Panhandle is visible as a broad elevated plain. No major mountain ranges or significant water bodies cross the mid-flight path. The transition from Basin and Range terrain in Nevada to the flat Gulf Coastal Plain of Texas is gradual and largely unremarkable from altitude.