AVIATION SYNTH
Airports & operations

Seattle-Tacoma International Airport completes C Concourse expansion

Last observed 2026-10-14 · Confidence 99%

Canonical event record

What happened

The $399 million project expanded the existing C Concourse from 81,000 to 229,500 square feet, adding passenger amenities, retail and operational facilities.

Why it matters: Aviation Synth is still preparing the editorial interpretation for this source-backed event.

Connected intelligence

Signals and related developments

No reviewed trend connection is available for this event.

These events share topic context. This is not a claim of causation.

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