TagForecast(50)

A line graph comparing historical aircraft operations data (2011–2022) with forecast scenarios through 2037, including an unconstrained 2022 forecast, a No Action constrained scenario, and a Proposed Action constrained scenario. The chart shows operations declining sharply in 2020 (likely due to COVID-19) and recovering, with the Proposed Action scenario reaching approximately 520,000 operations and the No Action scenario capping near 485,000 operations by 2037.

A slide from a Sea-Tac Airport presentation showing passenger volume data from 2019 to 2025 (in millions), including actual figures and forecasts. The chart shows a COVID-19-related drop to 20.0 million passengers in 2020 (-61.3% vs. 2019) with projected recovery to 54.3 million by 2025, exceeding pre-pandemic 2019 levels of 51.8 million by 4.9%.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes constrained operating growth scenarios (COGS), FAA approval documentation, and airside modeling data used to support environmental review planning. The forecast serves as a foundational planning tool for understanding future airport capacity and operational assumptions.

This technical memorandum, prepared by Leigh Fisher for the Port of Seattle in September 2023, presents an updated aviation activity forecast for Seattle-Tacoma International Airport. It includes Constrained Operating Growth Scenarios (COGS), FAA approval of the forecast update, and airside modeling documentation used to support environmental review. The forecast and operational assumptions outlined in this document serve as the foundation for planning future airport capacity and assessing potential noise and environmental impacts.

A scatter plot comparing multiple historical and projected annual air carrier operations forecasts for Seattle-Tacoma International Airport, spanning approximately 1975–2010. The chart overlays actual operations data against projections from sources including 1997 FAA and ACC (Hockaday) projections, the 1992 Flight Plan Project Final EIS, the 1996 Master Plan Update FEIS, the 1987 PSCOG Draft EIS, and several earlier studies dating back to a 1976 Sea-Tac Communities Plan, illustrating how successive forecasts consistently overestimated growth relative to actual operations.

Slide 5 from Seattle-Tacoma International Airport's Sustainable Airport Master Plan (SAMP) presenting an unconstrained activity forecast projecting growth to 66 million annual passengers and 540,000 annual operations over 20 years. Includes a comparison table of 2013 PAX rankings, developed acreage, and PAX-per-acre ratios for Sea-Tac, San Francisco, Newark, Boston, and Las Vegas airports.