Sit on the Left side of the plane for the best views on flights from San Antonio to Seattle. Left side wins at both ends of the flight. During the cruise over New Mexico, Colorado, and the Pacific Northwest interior, the left side also tends to face more toward the central Rockies as the route arcs northwest, giving better mountain views throughout. It is the clear choice for the full journey.

During takeoff from San Antonio International (SAT), sit on the Left side for the best views. SAT primarily departs north on runway 13R/31L or uses runway 12R. A northbound departure swings the aircraft northwest, putting downtown San Antonio and the San Antonio River valley on the left side. You get a clear look back at the city grid and the distinctive loop highway system as you climb out. Notable sights include: Downtown San Antonio skyline, San Antonio River bend, Loop 410 highway ring, Lackland AFB to the southwest.

When landing at Seattle Tacoma International (SEA), sit on the Left side for the best views. SeaTac primarily lands on runways 16L/16R, approaching from the north heading south. On this southbound approach, the left side faces east, giving you a direct broadside view of Mount Rainier dominating the horizon and the Cascade Range stretching north and south. The right side faces west toward Puget Sound and the Olympic Peninsula, which is also scenic, but Rainier is the standout feature. Notable sights include: Mount Rainier, Cascade Range, Lake Washington, Downtown Seattle skyline.

The flight from San Antonio International (SAT) to Seattle Tacoma International (SEA) takes Approximately 4 hours 15 minutes to 4 hours 45 minutes.

The route tracks northwest over the Texas Hill Country, then crosses the Guadalupe Mountains and southern New Mexico desert. Over central New Mexico the Rio Grande valley is visible. The route then crosses the Colorado Plateau and southern Rocky Mountain ranges including the Sangre de Cristo and San Juan Mountains. Continuing northwest over Utah's canyon country and the Great Basin, the flight crosses the Snake River Plain in southern Idaho before descending toward the Cascades and Puget Sound lowlands.