A Supplemental Environmental Assessment was conducted to evaluate the potential impacts of Alaska Airlines and United Airlines initiating commercial passenger service at the first fully private airline terminal in the United States.

Why does this project matter?

Paine Field adds another airport option in the greater Seattle region and provides economic benefits to the local community. Its efficient terminal emphasizes an enhanced passenger experience.

What is ESA doing to help?

Located about 30 miles north of downtown Seattle, Paine Field is a public-use airport owned and operated by Snohomish County.

An Environmental Assessment (EA) approved by the Federal Aviation Administration (FAA) in 2012 included a new passenger terminal building, initiation of airline service, and other related actions. Alaska Airlines and United Airlines sought to amend their Operations Specifications to allow for scheduled commercial air service to the new airport. The proposed service also required an amendment to the Airport’s existing Part 139 operating certificate. ESA prepared a Supplement to the 2012 EA to address the Operations Specifications and Part 139 amendments, as well as related actions to address additional passenger parking needs. The primary environmental concerns were related to the increase in aircraft noise, vehicular traffic, and air quality emissions.

After receiving approval from the FAA, Alaska Airlines commenced service on March 4, 2019, and United Airlines began service on March 31, 2019. Both airlines are flying the Embraer 175 aircraft, with future plans to add Boeing 737 aircraft.

Connect with our team

Testimonials icon

"Thank you on behalf of everyone here at Alaska for your tireless efforts on the PAE environmental assessment process! To say ‘we couldn’t have done it without you’ would be a tremendous understatement."

Alaska Airlines, Client


Client Alaska Airlines and United Airlines

Location Everett, WA


First fully private commercial airline terminal in the U.S.


2019 Innovation Project Award, National Council for Public-Private Partnerships (NCPPP)


2019 Best Regional Airport, Monocle magazine Travel Top 50 Awards


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