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 proceeding with 31 near-term master plan projects, including a new terminal, automated people mover, and airfield extensions, aimed at increasing safety, efficiency, and accommodating projected passenger growth by 2032.
While the FAA has federally approved the environmental assessment for these projects, local cities are challenging this ruling, citing concerns about increased noise and environmental impact on nearby communities, which could lead to project delays.

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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.