Seattle-Tacoma Moves Forward with $2.5B S Concourse Renovation

Project expected to improve the customer experience and increase operational efficiency.

Meg Godlewski

Wednesday, August 12, 2026 at 11:02 AM ET

Verified

Edited By:

Zach Vasile

Seattle-Tacoma International Airport [Credit: Shutterstock]

Key Takeaways:

Seattle-Tacoma International Airport (KSEA)'s S Concourse is scheduled for a $2.5 billion renovation starting in 2027 to modernize the 1973-era facility.
The project aims to enhance the passenger experience by adding 150,000 square feet, including new upper levels, improved boarding, and more dining, shopping, and lounge options, without adding new gates.
The renovation is projected to take eight years, with completion by 2034, and will be phased to minimize disruption to flight operations.

See a mistake? Contact us.

International travelers passing through Seattle will soon have a different experience passing through the S Concourse at Seattle-Tacoma International Airport (KSEA). According to officials from the Port of Seattle, the concourse will be getting a $2.5 billion renovation, transforming the 1973-era facility into a more modern space. Work is slated to begin in 2027.

“Today’s authorization to move forward with the S Concourse Evolution builds on the generational investments we are making at SEA to improve the passenger experience,” Port of Seattle Commission President Ryan Calkins said in a statement. “The project will add critical seismic, structural, and building systems upgrades to improve long-term passenger circulation as well as operational efficiency.”