Commercial Aviation Coordinating Commission

The Commercial Aviation Coordinating Commission's work was completed June 2023. The group was created by the Legislature to develop recommendations to meet Washington state critical aviation system capacity needs.

A follow-up group was created by the Legislature called the Commercial Aviation Work Group.


Stay engaged (9/5/23)

Visit the Commercial Aviation Work Group website for continued updates as that group will use information found during the CACC as a baseline of information.


The CACC began in October 2019 and is required to meet three deadlines:

  • Phase 1: Provide an initial list of six possible locations to the Legislature by January 1, 2021 [Completed]
  • Phase 2: Provide a list of the top two locations (options) by October 15, 2022 [Completed]
  • Phase 3: Provide a single preferred location recommendation by June 15, 2023

As part of the recommendation approved by the Commission September 2022, the number of greenfield options provided by the consultant working on the aviation system plan was narrowed to three based on the technical data available. The commission will now focus on community engagement and additional technical analysis in order to narrow the options down further in the Spring of 2023.

The opportunity for community feedback is now more focused on the greenfield sites. Prior to this, it was focused on existing airport communities as that list of options was narrowed.

The consultant for the Washington Aviation System Plan (WASP) has been conducting technical analysis that also serves the needs of the Commission. The two activities are separate endeavors but have similar interests.  The reason the CACC decided to continue to consider the three greenfield sites is because all the analysis has not yet been completed; the CACC had a legislative deadline to report a reduced list of locations to the legislature.  Since there are still three sites being analyzed, the CACC chose to continue to examine these three sites as one of the options.  The analysis that is remaining includes:

  • Airspace review – with assistance from the FAA
  • Air cargo analysis
  • Additional environmental factor analysis
  • Transportation/access analysis
  • Infrastructure analysis
  • Rough Order of Magnitude (ROM) cost estimates

Once this analysis is complete, the consultant planning team will provide the data to the Commission. We anticipate the first round of information in the February 2023 time frame and will schedule a commission meeting once the information is available.

The public is invited to future meetings and there will be an opportunity for public comments, and you will also see concentrated efforts for community input in and around the greenfield areas.  

The Commercial Aviation Coordinating Commission was created by the Legislature and tasked WSDOT Aviation to provide staff support for coordinating and administering the commission and technical assistance as requested by commission members.

The CACC aims to recommend a single preferred location for a new commercial service airport by June 15, 2023. In addition to recommending a new primary commercial aviation facility, the commission will recommend additional ways to accommodate capacity needs at other facilities.

We are responsible, according to the Legislature (PDF 76 KB), for the administration of the commission’s work while providing technical support to the commission members.

Communication to the public and stakeholders will be crucial for CACC. The communication plan will provide the following:

  • A logical and factual framework for understanding the issues that must be addressed by the CACC and for understanding how the decisions will be made.
  • Meaningful ways for people who want to be included and involved in the deliberations of the CACC.
  • Assure that major stakeholders, such as local governments, the aviation industry, airports, and regional planning agencies have timely information to assure meaningful input

Commission recommendations (Phase 2)

The current Commission’s recommendations are as follows:

  •  Add capacity to Paine Field according to its Airport Master Plan (with potential for additional capacity), assume SEA executes its SAMP, assist other airports interested in pursuing regional commercial service (distributed air service supported by emerging technology)
  • Continue to develop a greenfield site option with a two (2) runway configuration. Pierce County Central, Pierce County East and Thurston County Central are the three greenfield sites remaining under consideration for a new airport, out of the 10 that were analyzed by the state's consultant.





Past meetings and events

June 9, 2023 - Final CACC In Person & Virtual Public Meeting

March 30, 2023 - CACC Virtual Public Meeting

March 8, 2023 - Virtual Public Meeting

March 9, 2023 - Virtual Public Meeting

Virtual drop-in sessions

Thank you all for joining our CACC Drop-In Office Hours. Recordings will be available soon.

Sept. 23, 2022 9 a.m. - 12 p.m. - Virtual Public Meeting

CACC Online Open House Aug. 15 - Sept. 11, 2022

August 31, 2022 Virtual Open House 

August 23, 2022 Virtual Open House

June 23, 2022 1 p.m. - 3:30 p.m. - Virtual Public Meeting

April 20, 2022 10 a.m. - 11 a.m. - Virtual Public Webinar

Feb. 16, 2022, 10 a.m. - 11 a.m.- Virtual Public Webinar

Jan. 6, 2022, 9 a.m. - 11 a.m. - Virtual Public Meeting

CACC Online Open House Sept. 20 - Dec. 8, 2021

Dec. 7, 2021, 10 a.m. - 11:30 a.m. - Virtual Public Meeting

Nov. 10, 2021, 8:30 a.m. - 10 a.m. - Virtual Public Meeting and webinar

August 26, 2021, 9 a.m. - 1:30 p.m. Virtual Public Meeting

June 15, 2021, 10 a.m. - 11:30 a.m. Virtual Public Webinar

April 29, 2021, 8:30 a.m. - 12 p.m. Webinar and Virtual Public Meeting

Feb. 16, 2021, 9 a.m. - 10 a.m. Virtual Public Webinar

Dec. 9, 2020, 9 a.m. - 10 a.m. Virtual Public Webinar

  • Webinar on SeaTac Sustainability and UW ultrafine particulate studies
  • PowerPoint (Please email to obtain)

Oct. 21, 2020, 8 a.m. - 12 p.m. Virtual Public Meeting

July 22, 2020, 8 a.m. - 12 p.m. Virtual Public Meeting

April 2020 straw poll on a preferred strategy

Commissioners participated in a straw poll on a preferred strategy (no decision was made) for addressing Washington's aviation capacity and offered their preferences, along with comments on their reasons for doing so. The results of the poll are as follows:

1. Develop on large Sea-Tac-size airport: 0
2. Expand and/or improve one or more existing airports, to provide commercial and freight service: 7
3. Combine these strategies to meet near-term capacity needs from existing airports while conducting the processes necessary for a large new airport: 14
4. I don't know: 0
5. No answer: 4
Survey comments (PDF 202KB)

Jan. 9, 2020

Oct. 30, 2019

166,800 electric vehicle

registrations in Washington in 2023, up from 114,600 in 2022.

87 wetland compensation sites

actively monitored on 918 acres in 2023.

25,000 safe animal crossings

in the Snoqualmie Pass East Project area since 2014.