Washington Aviation System Plan (WASP)
The Washington Aviation System Plan studies the performance of Washington's entire aviation system.
The principal purposes of the Washington Aviation System Plan (WASP) are to:
- Study the performance of Washington State Aviation System's ability to meet the collective needs of aviation users within the state.
- Understand the contributions of individual airports to the entirety of the system.
- Provide data necessary for effective decision-making, the development of policies, and recommendations that will advance Washington's aviation system improvements.
The study involves examining aviation user requirements, current airport usage levels, and current numbers of based aircraft. The study also outlines the system's capacity to meet current demand requirements as well as forecasts of system capacity and demand.
The latest comprehensive WASP was released in winter 2026. Components of the updated plan are available on this site.
Copies of the 2026 WASP can be requested by contacting David Ison, Aviation Planner, by email at david.ison@wsdot.wa.gov.
WASP 2026 Executive Summary (PDF 514KB)
The 2026 report was built upon previous efforts and recommendations that included:
- 2009 Long-Term Air Transportation Study
- 2012 Aviation Economic Impact Study
- 2014 Airport Investment Study
- 2015 Airport Investment Solutions Study
- 2017 Washington Aviation System Plan
- 2020 Electric Aircraft Feasibility Study
- 2020 Aviation Economic Impact Study
- 2022 Washington Electric Airport Feasibility Study
- 2025 Advanced Air Mobility Aircraft Plan
Please email david.ison@wsdot.wa.gov to request any of the above efforts.
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Stay calm
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