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​Doing business with the Port of Seattle

The Port of Seattle is a major geographic gateway connecting passengers and cargo by air, water and land to destinations around the globe. As a public enterprise, the Port stimulates business activity to create long-term economic benefits for the citizens of King County, Washington, and builds transportation infrastructure that contributes to the vitality of the Pacific Northwest.
In this section you'll find information about our seaport and airport business activities, real estate development, as well as contracting and consulting opportunities, online business applications, economic development activities, real estate opportunities and much more.

Sea-Tac Rules, Regulations and Tariffs

Rules and Regulations (491 KB PDF, updated 7/31/2016)

Tariffs (370 KB PDF, updated Feb. 1, 2018)

First Amendment Activities at Sea-tac

First Amendment Activities such as distribution of literature, charitable solicitation and expressions of opinions and ideas are allowed on Airport premises subject to certain regulations. A permit is required for most activities.
Seattle-Tacoma International Airport is a welcoming facility that serves the people of King County, passengers and employees who work at the airport. The Port respects the rights of individuals and peaceful groups to voice their views and has long worked with advocacy and nonprofit organizations to accommodate permitted demonstrations and other First Amendment Activities.  

The Port of Seattle has put together a contingency plan for how we will manage spontaneous demonstrations at Sea-Tac. Demonstrators will be directed to an outside location away from airport operations. The Port remains committed to close communications with local nonprofits and advocacy groups to respect First Amendment Rights while protecting security at the airport.

To learn more about First Amendment Activities (click blue highlighted words to download documents):

1. Download and read Section 7F of Sea-Tac Airport  Rules and Regulations
2. Refer to maps of areas where activities are permitted
3. Complete application (two options):  
       A.  Online (quickest and most convenient)       
       B.  Download, complete and mail in an Application Form
4. Read sign-up procedures for Solicitation Activities
If you have any questions about the application process or need assistance, please email




Professional Services
and Major Construction

Sign up on the port's web-based Procurement and Roster Management System.


economic impact

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