Washington Aviation System Plan (WASP)

The Washington Aviation System Plan (WASP) primary purposes are to:

  • Study the performance and interaction of Washington's entire aviation system.
  • Understand the contributions of individual airports to the system as a whole.

The study involves examining aviation user requirements, current airport usage levels and based aircraft and capacity to meet current and future demand.

Completed in July 2017, the Washington State Aviation System Plan Report is available by request (please contact WSDOT Aviation Senior Planner Rob Hodgman).

WASP Executive Summary - July 2017 (PDF 1805 KB)

Letter from WSDOT Secretary Roger Millar (PDF 347 KB)

To develop the 2017 report, it 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

Managing small airports

Airport Sponsors, we hope you can find use of the below link to a Guidebook for Managing Small Airports.


  1. Access the guidebook
  2. Click the "View this PDF" button.
  3. Download as a guest by inputting your email address and accepting the terms of use.
  4. Download the PDF.
  5. View the Airport Cooperative Research Program (ACRP) WebResource 6 for more resources and supplements to the guidebook.


Zero emission electric vehicle registrations in Washington

increased 192% between 2017 and 2021.

45 projects to improve freight rail structures and freight movement

were underway as of December 31, 2021.

Washington state leveraged $100,000 to secure $27 million

in funding for airport investments in Fiscal Year 2022.