Menu Home

Sustainable Airport Master Plan (SAMP)

Sign up to receive email updates about SAMP!

Select Sustainable Airport Master Plan (SAMP). 

The Central Puget Sound region is expected to grow by another one million people by 2035. The Sustainable Airport Master Plan is the blueprint for changes at Sea-Tac Airport to meet future regional demand. 

In addition to considering forecasted passenger and cargo demand, the master plan takes stock of current facilities, infrastructure and operations—looking at scenarios five, 10 and 20 years in the future. It includes air quality, energy and water conservation, recycling and other strategic environmental goals, and will align with the Port’s sustainability and energy efficiency goals.

SAMP Focus Areas:

  • Meet forecast passenger demand
  • Meet forecast cargo demand
  • Comply with FAA airfield standards/guidance
  • Improve operational efficiency
  • Provide additional fuel capacity and meet Port's Sustainable Aviation Biofuel initiative

This Executive Summary summarizes the principle results of the SAMP—the forecasts of aviation activity, facility requirements, alternatives considered, the long-term vision for Airport development, and the projects recommended for implementation in the near term.

Near-Term Projects

Sea-Tac's SAMP plan works in two phases. The first phase recommends more than 30 projects that will improve efficiency, safety, access to the airport, and support facilities for airlines and the airport. Highlights of the first phase include a new terminal with 19 gates, and an automated people mover with three stations to connect the rental car facility, new terminal, and main terminal. Near-term projects will accommodate 56 million passengers and meet forecasted demand to 2027. Near-term projects will be complete or under construction by 2027. 

Near-Term Project Highlights

  • 19 additional gates and second terminal
  • Cargo facilities
  • 30+ projects to improve safety, provide support facilities, improve efficiency, and access to the airport
  • Complete or under construction by 2027

Long-Term Vision

Before recommending additional projects, the Port will participate in a broader regional conversation as well as review results from a new Puget Sound Regional Council regional aviation baseline study and additional Sea-Tac airfield and airspace studies. Airspace and financial components are tightly constrained and need further review. Long-term vision recommendations would undergo subsequent environmental review. 


Sea-Tac is the first large hub airport in the U.S. to fully incoporate sustainability as a key component of its master planning effort. This includes reducing environmental impacts, ensuring economic performance, and working collaboratively with local communities. As this planning process develops, sustainability criteria will be used to evaluate and develop future alternatives for growth. 

Airside, Terminal, and Landside

With the increasing growth in passengers and flights, Sea-Tac is evaluating opportunities and challenges within all three airport operational areas: airfield, terminal and landside (parking and roadways). The SAMP process will culminate in a capital improvement program and financing plan that will deliver the airfield, terminal and landside projects needed to relieve congestion and provide a high level of service to the airport's customers. 

Community Engagement

The SAMP public engagement effort is aligned with key project milestones and designed to keep the public informed as the SAMP develops. 

Each open house is intended to make it easy for the public to learn more, provide input and ask questions.

To keep up to date throughout the SAMP process and to be notified when new open houses are scheduled, register to receive email updates by clicking on the Sustainable Airport Master Plan (SAMP) box. 

Major Components and Timeline

Sustainable Airport Master Plan TimelineDocumentation

Open House Materials
Technical Memos
Back to Top