FAA Approves Environmental Assessment for Sea-Tac Airport Projects

Three neighboring communities seek judicial review, threatening to delay the facility’s major expansion plan.

Meg Godlewski

Tuesday, December 09, 2025 at 10:00 AM ET

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Meg Godlewski

Seattle-Tacoma International Airport [Credit: Shutterstock]

Key Takeaways:

Seattle-Tacoma International Airport (SEA) is moving forward with 31 near-term master plan projects, including a new terminal and automated people mover, to boost safety and efficiency, and accommodate an anticipated 56 million passengers by 2032.
While the FAA has approved the federal environmental assessment, neighboring cities have challenged this ruling in court, citing concerns over increased noise and its impact on communities, which could potentially delay the projects.

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Rarely is there such a thing as a “quick project” when it comes to an airport, but there are those classified as near-term airport projects that are part of a facility’s master plan.

For the Port of Seattle, which operates Seattle-Tacoma International Airport (SEA Airport) there are 31 near-term projects that, per the port’s published information, “focus on increasing safety and efficiency” for the facility.