US lawmakers have put a price tag on fixing the country's air traffic control system: more than $30 billion.

Senator Eric Schmitt, working with Transportation Secretary Sean Duffy, has introduced legislation that would direct over $30 billion toward a comprehensive overhaul of air traffic control operations, the Washington Times reports. The figure anchors what is effectively a down payment on decades of deferred modernization across the Federal Aviation Administration's ground infrastructure.

The proposal arrives at a moment when the strain on the system is measurable in operational terms. Airlines have absorbed delays and capacity constraints tied to controller staffing shortfalls and aging equipment, and carriers have increasingly voiced frustration that infrastructure — not aircraft availability or crew scheduling — is becoming the binding constraint on network growth.

For operators, the stakes are straightforward. ATC modernization spending translates into fewer flow-control delays, better resilience during peak operations, and capacity headroom at congested metros. The absence of it shows up in block-time inflation, schedule buffers, and the schedule-reduction decisions airlines have already taken at capacity-constrained facilities.

Duffy has framed the air traffic control rebuild as a priority since taking over at the Department of Transportation, and pairing a cabinet secretary with a Senate sponsor signals an attempt to move the funding debate from rhetoric to legislation. A $30 billion authorization, if enacted, would rank among the largest dedicated ATC infrastructure commitments in recent US history.

The bill still faces the standard legislative gauntlet: committee markup, potential amendments on funding mechanisms, and reconciliation with House appropriators. How the money would be phased — and whether it prioritizes controller staffing, surveillance and communications equipment replacement, or facility construction — will determine how quickly airlines see operational relief.

For now, the proposal is a marker, not a mandate. The aviation industry will be watching whether the $30 billion figure survives the appropriations process intact.