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SEA Airport Projects

Building To Serve You

Seattle-Tacoma International Airport (SEA), like the greater region, experienced unprecedented growth in the last decade. We are modernizing our airport to meet current and forecast traveler demand. Improvements made before and during COVID-19 will benefit our region for years. New time saving technology and safety measures improve customer convenience and well-being. Partnerships with airlines and airport businesses on customer service initiatives ensure that businesses operating at SEA can survive a crisis and thrive in the recovery. Airport infrastructure investments keep our essential supply chain stocked and maintain an economic lifeline for local businesses.

As we work toward this vision, SEA is wrapping up improvements to one million square feet of facilities and amenities. And we aren’t stopping there. Over the next five years we plan to invest $3.3 billion on 141 projects to make your travel experience more comfortable and convenient, and elevate your experience from curb to gate. We are committed to meeting our region’s future needs with an improved level of service: reduced congestion, less crowded terminals, and more efficient airfield traffic, all while investing in our community and its environmental health.

Happening Now

Our region needs an airport that meets current and future air travel demand. These transformational investments provide critical infrastructure, enhance your passenger experience, and create economic opportunity.

International Arrivals Facility

This program will bring an expanded International Arrivals Facility (IAF) to Seattle-Tacoma International Airport (SEA). The IAF, the most complex capital development program in the history of the 71-year-old airport, will significantly improve the arrival process for international passengers without adding new gates. This facility will focus resources to progress the Port’s Century Agenda strategy of doubling the number of international flights and destinations over 25 years.

Cell Phone Lot Access and Air Cargo Road Safety Improvements

Crews have started critical roadway construction and traffic safety improvements to improve congestion in the 200-parking space SEA Cell Phone Waiting lot and traffic on nearby roads. Upgrades include a new one-way entrance route from the Southbound Airport Expressway on an old spur bridge over South 170th Street into the south end of the lot. In addition, the cell phone lot layout will be reconfigured to support the new access routes, with new sidewalks and bus stops added to each roadway.

Automated Parking Guidance System 

SEA is incorporating new technology and installing the Park Assist® automated parking guidance system (APGS) to solve many customer parking issues once inside the garage. With over 12,000 stalls spread across eight floors in the SEA garage, finding an open stall quickly can be a challenge. With the Park Assist® APGS, parkers will be able to find an open stall quickly using a system of wayfinding signage, smart sensors and LED lights to designate available or occupied stalls.

Dining and Retail Redevelopment at SEA

This long-term project is designed to create space for new dining and retail businesses throughout the airport. New mezzanine-level restaurants and play areas for children will be included. Look forward to seeing a variety of new dining and retail options, both familiar national brand names and local businesses with Pacific Northwest flair. Read more about the dining and retail redevelopment.

Central Terminal Renovation

This nearly $17 million project will add 10,000 square feet of shops and restaurants to the Central Terminal. The renovation will include ADA accessibility improvements and accommodate the demand for dining and retail space at SEA. A second-floor mezzanine accessible by two elevators will allow more retail opportunities as well as seating with unmatched vistas. When complete, the Central Terminal will feature charging stations for all your electronics, more family-friendly seating, and modernized heating and cooling systems.

Baggage Handling System Optimization

In collaboration with the Transportation Security Administration (TSA), the Port will begin construction of an optimized outbound baggage handling system (BHS) at SEA. The new system will replace the aging conveyor system now in place and allow the airport to meet current and future growth.

Flight Corridor Safety Program

To help ensure safe aircraft takeoffs and landings, the Port will remove obstructions, primarily trees, from around SEA Airport. This effort, called the Flight Corridor Safety Program, is intended to safeguard people at the airport and in the surrounding community and complies with Federal Aviation Administration regulations.

Coming Soon

We’re increasing dining and retail, adding space to relax and recharge, and improving efficiency throughout the airport. Soon you’ll notice wayfinding improvements and a natural, modern feeling throughout SEA.

C Concourse Expansion

This proposed project will add four floors, redevelop the existing concourse level between Concourses C and D. It will create more space for shops and restaurants, new airline lounges, and private spaces such as an Interfaith Prayer Room, Meditation Room, and Nursing Suite.

S Concourse Renovation

Major renovations in this 40-year-old building will address building systems, seismic upgrades, and structural needs. Other planned facility improvements include reconfiguring the SEA Underground train, Mezzanine, Concourse, and Club levels for enhanced service and dining and retail updates for international passengers.

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 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.

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