The under-construction observation deck at the SEA concourse C expansion project
The under-construction observation deck at the SEA concourse C expansion project

AvGeeks traveling to, from, or transiting through Seattle-Tacoma International Airport (SEA) will soon have access to a relatively rare amenity, at least in the Pacific Northwest of the United States: an observation deck, albeit one that’s airside so it’s only available to ticketed passengers.

Currently expected to open to the traveling public in the second quarter of 2026, the expanded concourse will add at least 10 restaurants to the airport’s offerings, several new retail outlets, some fancy new seating, and lots of artwork. The signature artwork for the new spaces is a very large wood sculpture of a stylized tree, which will arch over an interesting stadium-style seating area.

A panoramic view of the under-construction main seating area and framing for the tree sculpture at SEA's Concourse C expansion project
A panoramic view of the under-construction main seating area and framing for the tree sculpture at SEA’s Concourse C expansion project

But, back to what’s most exciting for the AvGeek crowd – the Lookout at C, as the airport is calling it. It’s a glassed-in observation area, looking west-southwest from the C concourse toward the main terminal and the airport’s taxiways, some of the gate areas, and SEA’s three runways.

The viewing area allows for some great views of the ramp areas and active runways at SEA
The viewing area allows for some great views of the ramp areas and active runways at SEA

The Port of Seattle has a cool VR walkthough site of the expansion project; you can check it out here.

The list of new restaurants is noteworthy, too: Bell St. Landing by Hudson; Nanny’s BBQ; Bite Society; Olympia Coffee; Buffalo Wild Wings Go; Port of Subs; Chills; Seattle Macaron Co.; Great State Burger; and Wanderlust.

From the "you can't have it all" dept., there are some drawbacks when taking photos through windows. But I'm not going to complain, because the views are still going to be amazing from here.
From the “you can’t have it all” dept., there are some drawbacks when taking photos through windows. But I’m not going to complain, because the views are still going to be amazing from here.

Overall, the expansion will add four floors, roughly 225,000 square feet of space, and a new Alaska Airlines lounge. The new concourse will also feature a performance area for live music, a sensory room, an interfaith prayer and meditation room, a nursing room, and a pet relief area.

We’ll keep you posted as the airport makes progress toward completing this project next year.

EDITOR-AT-LARGE / DIRECTOR OF PHOTOGRAPHY - SEATTLE, WA Francis Zera is a Seattle-based architectural, aerial, aviation, and commercial photographer, a freelance photojournalist, and a confirmed AvGeek.

https://www.zeraphoto.com
1 Comment
Ellen D Duernberger

Wow! SEA is my home airport. Looking forward to this!

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